| 1 |
<p class="MsoNormal">When a body moves to and fro about a point, its motion is
called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Random motion<o:p></o:p></p>
- B. <p class="MsoNormal">Vibratory motion<o:p></o:p></p>
- C. <p class="MsoNormal">Linear motion<o:p></o:p></p>
- D. <p class="MsoNormal">Rotatory motion<o:p></o:p></p>
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| 2 |
The distance between two consecutive compressions or rarefactions in longitudinal waves is called: |
- A. Amplitude
- B. Wavelength
- C. Half wavelength
- D. 1/4 wavelength
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| 3 |
<p class="MsoNormal">Ripple tank is an instrument which is used to study the
characteristics of:<o:p></o:p></p> |
- A. <p class="MsoNormal">Mechanical waves<o:p></o:p></p>
- B. <p class="MsoNormal">Light waves<o:p></o:p></p>
- C. <p class="MsoNormal">Radio waves<o:p></o:p></p>
- D. <p class="MsoNormal">Electro-magnet waves<o:p></o:p></p>
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| 4 |
Sound waves are an example of: |
- A. Transverse waves
- B. Electromagnetic waves
- C. Longitudinal waves
- D. All of these
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| 5 |
<p class="MsoNormal">The oscillations of a system in the presence of which force
are called damp oscillations:<o:p></o:p></p> |
- A. <p class="MsoNormal">Resistive force<o:p></o:p></p>
- B. <p class="MsoNormal">Attractive force<o:p></o:p></p>
- C. <p class="MsoNormal">Coulomb force<o:p></o:p></p>
- D. <p class="MsoNormal">Both a and b<o:p></o:p></p>
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| 6 |
The unit of intensity of sound: |
- A. wm<sup>-1</sup>
- B. wm
- C. wm<sup>-2</sup>
- D. wm<sup>-3</sup>
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| 7 |
<p class="MsoNormal">1 GB =<o:p></o:p></p> |
- A. <p class="MsoNormal">1022MB<o:p></o:p></p>
- B. <p class="MsoNormal">1023 MB<o:p></o:p></p>
- C. <p class="MsoNormal">1024MB<o:p></o:p></p>
- D. <p class="MsoNormal">1025MB<o:p></o:p></p>
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| 8 |
Bets can hear sound of frequency up to: |
- A. 100,000 Hz
- B. 25000 Hz
- C. 120,000 Hz
- D. 1000 Hz
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| 9 |
The speed of sound in the air at one atmospheric pressure at room temperature is: |
- A. 343 ms-1
- B. 346 ms-1
- C. 349 ms-1
- D. 339 ms-1
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| 10 |
The speed of sound in iron at 25 <sup>o</sup>C is ms<sup>-1</sup> |
- A. 5950
- B. 5900
- C. 6950
- D. 6940
|