ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Greater than the speed at which they pass from left to right<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Less than the speed at which they pass from left to right<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">The same speed at which they pass from left to right<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Any of above<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of them<o:p></o:p></span></p>
2

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Greater than the speed at which they pass from left to right<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Less than the speed at which they pass from left to right<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">The same speed at which they pass from left to right<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Any of above<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of them<o:p></o:p></span></p>
3 The free electrons in metals: <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Are in random motion and their speed depends upon temperature<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Move in particular direction<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Move with speed of light<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Move such that their speed does not depend on their temperature<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
4 In a metal, the valence electrons are: <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Attach to individual atoms<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Not attached to individual atoms<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Free to move within the metal<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (C)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Both (B) and (C)<b><o:p></o:p></b></span></p>
5 The positive charge moving in one direction is equivalent in all external affects to a: <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Negative charge is moving in the same direction<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Positive charge is moving in the opposite direction</span><span style="font-size: 12.0pt;line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Negative charge moving in the opposite direction<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Positive charges moving in the same direction<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
6

The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">One coulomb<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">0.5 coulomb<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">30 coulomb<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">2 coulombs<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
7 The conventional current is the name given to current due to flow of: <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt; text-align: justify;">Positrons</span> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Positive charges<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Negative charges<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (C)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
8 In gases, the charge carries are: <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Electrons<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Positive ions<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Negative ions<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (C)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Both (A) and (B)<b><o:p></o:p></b></span></p>
9

The charge carries in the electrolyte are:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Positive ions<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Negative ions<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Either (A) or (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Neither (A) nor (B)<o:p></o:p></span></p>
10

In case of metallic conductors, the change carries are:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Protons<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Electrons<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Antiprotons<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Positrons<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B)<o:p></o:p></span></p>
11

The current that flows through the coil of a motor causes:

 <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Its shaft to revolve<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Its brushes to rotate<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Motor to move<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Its shafts to rotate<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
12 Most practical application of electricity involve <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Charges at the rest<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Charges in the motion<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Electrons at rest<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Atoms in motion<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Molecules in motion<o:p></o:p></span></p>
13 An eV is unit of: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Energy<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Work<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Power</span></p> <p class="MsoNormal"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Both (B) and(C)<b><o:p></o:p></b></span></p>
14 The earth’s potential and potential at infinity are taken: <p class="MsoNormal"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Equal<b><o:p></o:p></b></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Zero<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">First is greater than the second<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Second is greater than the first<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p>
15 Another mean of electric potential energy per unit charge is given by: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Electric intensity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential gradient<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Electric Flux<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential difference<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
16 Tick the correct statement: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both the potential and potential difference is scalars<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential is a scalar but potential difference is a vector<o:p></o:p></span></p> <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Both are vectors</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential is vector but potential difference is scalar<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
17 The surface destiny of charge is defined is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge per volume<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Mass per volume<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge per area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Mass per area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (B) and (C)<o:p></o:p></span></p>
18 Gaussian surface is always: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Rectangular<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Spherical<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Cylindrical<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Box shape<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Any of these<o:p></o:p></span></p>
19 A field free region is found: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Near the outer surface of a hollow charged metal sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">In the interior of solid metal uncharged sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">In the interior of solid metal charged sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (C)<o:p></o:p></span></p>
20

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Circle<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Rectangle<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Box<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Cylinder<o:p></o:p></span></p>
21 The interior of a hollow charged metal sphere is a region which: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Contain some magnitude of electric field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Is full of electric field lines<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Is field-free region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Either (A) or (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
22 The flux through a closed surface depends upon: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Shape of geometry of the closed surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge enclosed<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Nature of the medium<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (B) and (C)<o:p></o:p></span></p>
23

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Such that it is greater in the first case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Such that it is greater in the second case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
24

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Opposite to each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">At 60º with each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (B) and (C)<o:p></o:p></span></p>
25 The electric flux through any surface depends upon: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Intensity of electric field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Area of the surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Angle between intensity and area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">All of these<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
26 When certain area A is held parallel to the field lines, then: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">No lines cross this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Maximum lines pass through this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">The number of lines are between zero and maximum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B) correct<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
27 The number of field lines passing through unit area held perpendicular to the field lines represent: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Flux in that region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Intensity of the field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Area of the region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
28

Electric flux is:

 <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Cross product of two vector</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Dot product of two vectors<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">A vector quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">A scalar quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (B) and (D)<o:p></o:p></span></p>
29

An inkjet printer uses in its operation:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Neutrons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Mesons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Positrons and photons<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">An electric charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
30 An important part of inkjet printer is: <span style="font-size:12.0pt;line-height:107%; font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin;mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:AR-SA">Toner</span> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Drum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Deflection plates<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Heated roles<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
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