| 1 |
The electrostatic force acting on two charges each of 1 C separated by 1m is about . |
- A. 9 x 10<sup>9</sup> N
- B. 9 x 10<sup>-9</sup>N
- C. 9 x 10<sup>8</sup>N
- D. 9 x 10<sup>-8</sup>N
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| 2 |
If we double the distance between two charges, then force becomes |
- A. 4-times
- B. 1/4th
- C. Double
- D. Half
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| 3 |
<p class="MsoNormal">The brain of any computer system is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Monitor<o:p></o:p></p>
- B. <p class="MsoNormal">Memory<o:p></o:p></p>
- C. <p class="MsoNormal">CPU<o:p></o:p></p>
- D. <p class="MsoNormal">Control unit<o:p></o:p></p>
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| 4 |
<p class="MsoNormal">The sound level of rustling of leave is:<o:p></o:p></p> |
- A. <p class="MsoNormal">1 dB<o:p></o:p></p>
- B. <p class="MsoNormal">20 dB<o:p></o:p></p>
- C. <p class="MsoNormal">30 dB<o:p></o:p></p>
- D. <p class="MsoNormal">10 dB<o:p></o:p></p>
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| 5 |
<p class="MsoNormal">The technique or method used to absorb undesirable sounds by
soft and porous surface is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Ultrasonic<o:p></o:p></p>
- B. <p class="MsoNormal">Acoustic protection<o:p></o:p></p>
- C. <p class="MsoNormal">Infrasonics<o:p></o:p></p>
- D. <p class="MsoNormal">Echo<o:p></o:p></p>
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| 6 |
Electric potential is a quantity: |
- A. Scalar
- B. Vector
- C. Base
- D. All
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| 7 |
When frequency of sound wave is increased, which of the
following decreases:WavelengthPeriodAmplitude |
- A. (i) Only
- B. (iii) Only
- C. (i) And (ii) only
- D. (i) And (iii) only
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| 8 |
Field around a charge in which that charge exerts a force on a point charge brought in that field is called: |
- A. Electric field
- B. Magnetic field
- C. Neutral zone
- D. Point charge
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| 9 |
<p class="MsoNormal">The pitch of a sound is most closely related to its:<o:p></o:p></p> |
- A. <p class="MsoNormal">Wave form<o:p></o:p></p>
- B. <p class="MsoNormal">Period<o:p></o:p></p>
- C. <p class="MsoNormal">Amplitude<o:p></o:p></p>
- D. <p class="MsoNormal">Frequency<o:p></o:p></p>
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| 10 |
Who developed the 1st practical electric battery: |
- A. Alessandro volta
- B. Faraday
- C. Newton
- D. None of these
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