A source of sound of frequency 600 Hz is...

A source of sound of frequency 600 Hz 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 the sound recorded by an observer who is standing in air is :

200 Hz

3000 Hz

120 Hz

600 Hz

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A source of sound of frequency 600 Hz 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 sounds recorded by an observer who is standing in air is :-

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