| 1 |
The state of human blood flow can be found by using. |
- A. Newton's formula of speed of sound
- B. Interference of sound
- C. Phenomena of beats
- D. Doppler's effect of sound
|
| 2 |
When the amplitude of a wave become double, its energy becomes |
- A. One half
- B. Two times
- C. Three times
- D. Four times
|
| 3 |
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
|
| 4 |
The distance between two consecutive crest is called. |
- A. Displacement
- B. Amplitude
- C. Wave front
- D. Wavelength
|
| 5 |
A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is. |
- A. 15 Hz
- B. 30 HZ
- C. 60 Hz
- D. 480 Hz
|
| 6 |
If 332 waves pass through a medium in 1 second with speed of 332 ms-1 then wavelength will be |
- A. 7 m
- B. 332 m
- C. 664 m
- D. 1 m
|
| 7 |
Radar system is an application of. |
- A. Chemical effect
- B. Electric effect
- C. Magnetic effect
- D. Doppler's effect
|
| 8 |
The process followed by Newton for the determination of speed of sound in air is |
- A. Adiabatic
- B. Isothermal
- C. Isobaric
- D. Isochoric
|
| 9 |
Star moving towards the earth show |
- A. Red shift
- B. Blue shift
- C. Green shift
- D. Yellow shift
|
| 10 |
Sound wave can not be |
- A. Reflected
- B. Refracted
- C. Diffracted
- D. Polarized
|
