Wave and Sound-I Physics Test Series NEET 2020

Test Preparation on Wave and Sound-I-Physics Test Series For NEET 2020

1.

The speed of sound in oxygen ( ) 2 O at a certain temperature is
460 ms–1. The speed of sound in helium (He) at the same
temperature will be (assume both gases to be ideal)-

1500 ms–1
2650 ms–1
3330 ms–1
41420 ms–1

2.

Sound waves travel at 350 m/s through a warm air and at
3500 m/s through brass. The wavelength of a 700 Hz
acoustic wave as it enters brass from warm air-

1Decreases by a factor 20
2Decreases by a factor 10
3Increases by a factor 20
4Increases by a factor 10

3.

1A
2B
3C
4D

4.

1A
2B
3C
4D

5.

In a sinusoidal wave, the time required for a particular point
to move from maximum displacement to zero displacement
is 0.170 second. The frequency of the wave is-

11.47 Hz
20.36 Hz
30.73 Hz
42.94 Hz

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