| 1 |
Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is. |
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| 2 |
Two waves of same frequency and moving in the same direction produces. |
- A. Interference
- B. Diffraction
- C. Beats
- D. Stationary waves
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| 3 |
Sound waves are |
- A. Electromagnetic waves
- B. Transverse waves
- C. Compressional waves
- D. Matter waves
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| 4 |
Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will |
- A. Decrease
- B. Unchanged
- C. Half
- D. Increases
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| 5 |
Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is. |
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| 6 |
the velocity of sound at 0 <sup>o</sup>C is 332 ms-1, the velocity of sound at 10 <sup>o</sup>C will be |
- A. 337.1 ms-1
- B. 338.1 ,ms-1
- C. 342.1 ms-1
- D. 328.1 ms-1
|
| 7 |
The distance covered by wave in 1 sec is |
- A. wavelength
- B. Wave number
- C. Wave speed
- D. Frequency
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| 8 |
On loading the prong of a tuning fork with wax, the frequency of sound. |
- A. Increases
- B. Decreases
- C. Remains same
- D. First increases then decrease
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| 9 |
In stationary waves the points which always remain at rest are. |
- A. Nodes
- B. Antinodes
- C. Crest
- D. Trough
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| 10 |
the velocity of sound is maximum at 20 <sup>o</sup>C in |
- A. Lead
- B. Copper
- C. Glass
- D. Iron
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