A source emits sound of frequency 600 Hz inside water. The frequency heard in air will be equal to (velocity of sound in water = 1500 m/s, velocity of sound in air = 300 m/s) [2004]

Question

A source emits sound of frequency 600 Hz inside water. The frequency heard in air will be equal to (velocity of sound in water = 1500 m/s, velocity of sound in air = 300 m/s) [2004]

Smart Achievers · Accepted Answer

(3)

Frequency does not change with a change of medium.

$∴$ Frequency of sound in water = Frequency heard in air = 600 Hz.

Solution

Q.
A source emits sound of frequency 600 Hz inside water. The frequency heard in air will be equal to (velocity of sound in water = 1500 m/s, velocity of sound in air = 300 m/s) [2004]

1 3000 Hz

2 120 Hz

3 600 Hz

4 6000 Hz

Ans.
(3)

Frequency does not change with a change of medium.

$∴$ Frequency of sound in water = Frequency heard in air = 600 Hz.

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