| 1 |
The profile of periodic waves generated by a source executing S.H.M is represented by a. |
- A. Circle
- B. Sine curve
- C. Tangent curve
- D. Cosine curve
|
| 2 |
In order to produce beats, the two sound waves should have. |
- A. The same amplitude
- B. Slightly different amplitude
- C. The same frequency
- D. slightly different frequencies.
|
| 3 |
The distance covered by wave in 1 sec is |
- A. wavelength
- B. Wave number
- C. Wave speed
- D. Frequency
|
| 4 |
Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is. |
|
| 5 |
In stationary waves, the particle velocity at nodes is |
- A. Minimum
- B. Maximum
- C. Zero
- D. Constant
|
| 6 |
A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is |
- A. 4 m
- B. 2 m
- C. 3 m
- D. 1 m
|
| 7 |
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
|
| 8 |
The speed of sound increases with the increase of in |
- A. Pressure
- B. Volume
- C. Temperature
- D. Density
|
| 9 |
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>
|
| 10 |
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
|
