| 1 |
According to Newton, sound travels in air under conditions of. |
- A. Adiabatic
- B. Isothermal
- C. Isobaric
- D. Isochoric
|
| 2 |
If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is. |
- A. 1m
- B. 2 m
- C. 3 m
- D. 4 m
|
| 3 |
In sonar we use |
- A. Sound waves
- B. Ultrasound waves
- C. Microwaves
- D. Radio waves
|
| 4 |
A set of frequencies which are multiples of the fundamental frequency are called. |
- A. Doppler effect
- B. Nodal frequencies
- C. Beat frequencies
- D. Hamonics
|
| 5 |
The distance covered by wave in 1 sec is |
- A. wavelength
- B. Wave number
- C. Wave speed
- D. Frequency
|
| 6 |
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
|
| 7 |
If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is. |
- A. 200 m
- B. 2 m
- C. 1 m
- D. 0.5 m
|
| 8 |
The distance between two consecutive crests of troughs is called |
- A. Time period
- B. Wave length
- C. Frequency
- D. Displacement
|
| 9 |
Star moving towards the earth show |
- A. Red shift
- B. Blue shift
- C. Green shift
- D. Yellow shift
|
| 10 |
The speed of sound in air does not depend upon |
- A. Temperature
- B. Pressure
- C. Density
- D. Medium
|
