| 1 |
That period in which voltage repeats its value in equal intervals is called: |
- A. cycle
- B. Time period
- C. Frequency
- D. Amplitude
|
| 2 |
How Galvanometer is connected in circuit to detect current? |
- A. In Series
- B. In Parallel
- C. Fixed
- D. Variable
|
| 3 |
The resistance of voltmeter is: |
- A. zero
- B. low
- C. Very high
- D. 10Ω
|
| 4 |
<p class="MsoNormal">If a ray of light in glass is incident on an air surface at
an angle greater than the critical angle, the ray will:<o:p></o:p></p> |
- A. <p class="MsoNormal">Refract only<o:p></o:p></p>
- B. <p class="MsoNormal">Reflect only<o:p></o:p></p>
- C. <p class="MsoNormal">Partially refract and partially reflect<o:p></o:p></p>
- D. <p class="MsoNormal">Diffract only<o:p></o:p></p>
|
| 5 |
<p class="MsoNormal">In OR operation inputs are connected as:<o:p></o:p></p> |
- A. <p class="MsoNormal">Series<o:p></o:p></p>
- B. <p class="MsoNormal">Parallel<o:p></o:p></p>
- C. <p class="MsoNormal">Both series or parallel<o:p></o:p></p>
- D. <p class="MsoNormal">None of these<o:p></o:p></p>
|
| 6 |
<p class="MsoNormal">The center of curved surface of spherical mirror is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Focus<o:p></o:p></p>
- B. <p class="MsoNormal">Axis<o:p></o:p></p>
- C. <p class="MsoNormal">Centre<o:p></o:p></p>
- D. <p class="MsoNormal">Pole<o:p></o:p></p>
|
| 7 |
The current used in houses is: |
- A. A.C.
- B. Conventiona current
- C. Current
- D. D.C
|
| 8 |
The unit of (ρ) in formula R=ρ.L/a is______________. |
- A. Ω
- B. Ω-m
- C. Ω-m<sup>2</sup>
- D. Ω-m<sup>-2</sup>
|
| 9 |
If we double both the current and the voltage in a circuit while keeping its resistance constant, the power. |
- A. remains unchanged
- B. halves
- C. doubles
- D. four time
|
| 10 |
<p class="MsoNormal">The screen of a cathode ray tube consists of a thin layer
of:<o:p></o:p></p> |
- A. <p class="MsoNormal">Sodium<o:p></o:p></p>
- B. <p class="MsoNormal">Nitrogen<o:p></o:p></p>
- C. <p class="MsoNormal">Oxygen<o:p></o:p></p>
- D. <p class="MsoNormal">Phosphorus<o:p></o:p></p>
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