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A source of sound frequency 600Hz is placed inside water. The speed of sound in water is 1500 m/s and in air it is 300 m/s. The frequency of sound is recorded by an observer, who is standing in the air is?

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A source of sound frequency 600Hz is placed inside water. The speed of sound in water is 1500 m/s and in air it is 300 m/s. The frequency of sound is recorded by an observer, who is standing in the air is?

(a) 200 Hz

(b) 3000 Hz

(c) 120 Hz

(d) 600 Hz

This question was addressed to me in an online quiz.

My question is taken from Transverse Waves in section Waves of Engineering Physics I

1 Answer

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Best answer
Right choice is (d) 600 Hz

Explanation: The frequency of sound does not change during its refraction from water into the air.

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