| 1 |
Speed of sound in vacuum is |
- A. 280 ms-1
- B. 332 ms-1
- C. 333 ms-1
- D. Zero ms-1
|
| 2 |
If the pressure of a gas is doubled, then speed of sound is. |
- A. Doubled
- B. Become half
- C. Not affected
- D. Increases by four times
|
| 3 |
When two identical waves superimposed, which can change. |
- A. Wave length
- B. Frequency
- C. Velocity
- D. Amplitude
|
| 4 |
Longitudinal waves do not exhibit |
- A. Reflection
- B. Refraction
- C. Polarization
- D. Diffraction
|
| 5 |
The speed of sound in ari at 0 <sup>o</sup>C is 332 ms-1, Then the speed at 40 <sup>o</sup>C will be |
- A. 372 ms-1
- B. 356 ms-1
- C. 346 ms-1
- D. 332 ms-1
|
| 6 |
The speed of sound in air does not depend upon |
- A. Temperature
- B. Pressure
- C. Density
- D. Medium
|
| 7 |
The experimental value for the velocity of sound in air is |
- A. 233 m-sec<sup>-1</sup>
- B. 333 m-sec<sup>-1</sup>
- C. 433 m-sec<sup>-1</sup>
- D. 533 m-sec<sup>-1</sup>
|
| 8 |
In transverse waves the particles of medium vibrate |
- A. Along the direction of wave
- B. Opposite to direction of wave
- C. Perpendicular to direction of wave
- D. Slowly
|
| 9 |
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
|
| 10 |
The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is. |
- A. 4 l
- B. 2l
- C. l
- D. 1/4 l
|
