| 1 |
Who did give the correct formula for the speed of sound in air? |
- A. Boyle
- B. Laplace
- C. Newton
- D. Einstein
|
| 2 |
A bat finding its correct location by sending |
- A. Matter waves
- B. Ultrasonic waves
- C. Infrasonic waves
- D. electromagnetic waves
|
| 3 |
The speed of sound in air does not depend upon |
- A. Temperature
- B. Pressure
- C. Density
- D. Medium
|
| 4 |
Beats can be heard when difference of frequency is not more than. |
- A. 8 Hz
- B. 10 Hz
- C. 4 Hz
- D. 6 Hz
|
| 5 |
Longitudinal waves do not exhibit |
- A. Reflection
- B. Refraction
- C. Polarization
- D. Diffraction
|
| 6 |
The distance between two consecutive crest is called. |
- A. Displacement
- B. Amplitude
- C. Wave front
- D. Wavelength
|
| 7 |
When sound waves enter in different medium, the quantity that remains unchanged is. |
- A. Intensity
- B. Speed
- C. Frequency
- D. Wave length
|
| 8 |
Which of the following is mechanical wave |
- A. Heat
- B. Light
- C. Sound
- D. None of these
|
| 9 |
Crests and trough are formed in. |
- A. Longitudinal waves
- B. transverse waves
- C. Stationary waves
- D. Compression waves
|
| 10 |
Wavelength of a wave for closed pipe having length 'l' in the fundamental mode is. |
- A. 2 l
- B. 1/2
- C. 4 l
- D. l
|
