| 1 |
Longitudinal waves do not exhibit |
- A. Reflection
- B. Refraction
- C. Polarization
- D. Diffraction
|
| 2 |
Speed of sound in copper is |
- A. 38000 ms-1
- B. 3600 ms-1
- C. 3500 ms-1
- D. 3400 ms-1
|
| 3 |
Speed of sound in aluminum at 20 <sup>o</sup>C is. |
- A. 3600 m/s
- B. 5100 m/s
- C. 5130 m/s
- D. 3500 m/s
|
| 4 |
Star moving towards the earth show |
- A. Red shift
- B. Blue shift
- C. Green shift
- D. Yellow shift
|
| 5 |
When two waves of same frequency travel in opposite direction, the phenomenon will be |
- A. Diffraction
- B. Stationary waves
- C. Polarization
- D. Interference
|
| 6 |
When the amplitude of a wave become double, its energy becomes |
- A. One half
- B. Two times
- C. Three times
- D. Four times
|
| 7 |
Velocity of sound is independent of |
- A. Temperature
- B. Density
- C. Pressure
- D. Medium
|
| 8 |
In stationary waves, the velocity of particle at the node is. |
- A. Maximum
- B. Infinite
- C. Zero
- D. Varible
|
| 9 |
Two tunign forks of frequencies 260 Hz and 256 Hz are sounded together , the number of beats per second is. |
|
| 10 |
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>
|