1 |
If 30 waves per second pass through a medium at a speed 30 ms-1, then the wavelength is. |
- A. 30 m
- B. 15 m
- C. 1 m
- D. 28 m
|
2 |
Sound wave can not be |
- A. Reflected
- B. Refracted
- C. Diffracted
- D. Polarized
|
3 |
Half wavelength corresponds to |
- A. 0 <sup>o</sup>
- B. 90 <sup>o</sup>
- C. 180 <sup>o</sup>
- D. 360 <sup>o</sup>
|
4 |
When the amplitude of a wave is increase to doubled is energy. |
- A. Remain the same
- B. Increases 4 times
- C. Increases by two times
- D. Decreases by half
|
5 |
Which of the following is mechanical wave |
- A. Heat
- B. Light
- C. Sound
- D. None of these
|
6 |
The distance between two consecutive crest is called. |
- A. Displacement
- B. Amplitude
- C. Wave front
- D. Wavelength
|
7 |
The mechanism of transports energy of all the waves is |
- A. Different
- B. Same
- C. Complicated
- D. Easy
|
8 |
Longitudinal waves do not exhibit |
- A. Reflection
- B. Refraction
- C. Polarization
- D. Diffraction
|
9 |
Crests and trough are formed in. |
- A. Longitudinal waves
- B. transverse waves
- C. Stationary waves
- D. Compression waves
|
10 |
The periodic variations of sound between maximum and minimum loudness are called. |
- A. Doppler's effect
- B. reflection
- C. Laplace correction
- D. Beats
|