| 1 |
<p class="MsoNormal">The force applied on the mass attached with a spring is
represented by:<o:p></o:p></p> |
- A. <p class="MsoNormal">f<sub>a</sub><o:p></o:p></p>
- B. <p class="MsoNormal">f<sub>c</sub><o:p></o:p></p>
- C. <p class="MsoNormal">f<sub>ext<o:p></o:p></sub></p>
- D. <p class="MsoNormal">f<sub>s</sub><o:p></o:p></p>
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| 2 |
<p class="MsoNormal">The maximum displacement from mean position is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Maximum height<o:p></o:p></p>
- B. <p class="MsoNormal">Time period<o:p></o:p></p>
- C. <p class="MsoNormal">Amplitude<o:p></o:p></p>
- D. <p class="MsoNormal">Interval<o:p></o:p></p>
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| 3 |
For normal person audible frequency range for sound wave lies between. |
- A. 10 Hz and 10KHz
- B. 20 Hz and 20KHz
- C. 25 Hz and 25KHz
- D. 30 Hz and 30KHz
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| 4 |
<p class="MsoNormal">In simple harmonic motion, the acceleration of the body
is…………. Proportional to the displacement.<o:p></o:p></p> |
- A. <p class="MsoNormal">Inversely<o:p></o:p></p>
- B. <p class="MsoNormal">Directly<o:p></o:p></p>
- C. <p class="MsoNormal">Equally<o:p></o:p></p>
- D. <p class="MsoNormal">Ration<o:p></o:p></p>
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| 5 |
<p class="MsoNormal">The waves in which particles of the medium vibrate
perpendicular to the direction of waves are:<o:p></o:p></p> |
- A. <p class="MsoNormal">Electromagnetic waves<o:p></o:p></p>
- B. <p class="MsoNormal">Sound waves<o:p></o:p></p>
- C. <p class="MsoNormal">Both a and b<o:p></o:p></p>
- D. <p class="MsoNormal">Transverse waves<o:p></o:p></p>
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| 6 |
To hear echo, the distance between the observer and the obstacle is 17m then how much distance will the sound travel? |
- A. 60m
- B. 54m
- C. 17m
- D. 34m
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| 7 |
How does sound travel from its source to your ear? |
- A. Byc changes in air pressure
- B. By vibration in wires or strings
- C. By electromagnetic waves
- D. By infrared waves
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| 8 |
After how much time the echo must be heard? |
- A. 0.1 s
- B. 0.10 s
- C. 0.20 s
- D. 0.50 s
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| 9 |
The S.I unit of intensity of sound is: |
- A. Wm
- B. Wm2
- C. Wm-2
- D. Wm-1
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| 10 |
<p class="MsoNormal">If the mass of bob of a simple pendulum is doubled, its time
period:<o:p></o:p></p> |
- A. <p class="MsoNormal">Is doubled<o:p></o:p></p>
- B. <p class="MsoNormal">Becomes four times<o:p></o:p></p>
- C. <p class="MsoNormal">Remains same<o:p></o:p></p>
- D. <p class="MsoNormal">Becomes half<o:p></o:p></p>
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