| 1 |
Beats can be heard when difference of frequency is not more than. |
- A. 8 Hz
- B. 10 Hz
- C. 4 Hz
- D. 6 Hz
|
| 2 |
In stationary waves, the velocity of particle at the node is. |
- A. Maximum
- B. Infinite
- C. Zero
- D. Varible
|
| 3 |
When two waves of same frequency travel in opposite direction, the phenomenon will be |
- A. Diffraction
- B. Stationary waves
- C. Polarization
- D. Interference
|
| 4 |
The distance between two consecutive crest is called. |
- A. Displacement
- B. Amplitude
- C. Wave front
- D. Wavelength
|
| 5 |
On loading the prong of a tuning fork with wax, the frequency of sound. |
- A. Increases
- B. Decreases
- C. Remains same
- D. First increases then decrease
|
| 6 |
Stars moving away from Earth show a |
- A. Green shift
- B. Blue shift
- C. Red shift
- D. Yellow shift
|
| 7 |
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
|
| 8 |
the louder the sound, the greater will be its. |
- A. Speed
- B. Frequency
- C. Amplitude
- D. Wave length
|
| 9 |
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
|
| 10 |
the velocity of sound at 0 <sup>o</sup>C is 332 ms-1, the velocity of sound at 10 <sup>o</sup>C will be |
- A. 337.1 ms-1
- B. 338.1 ,ms-1
- C. 342.1 ms-1
- D. 328.1 ms-1
|