NEET Physics Waves Questions Solved

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 is 300 m/s. The frequency of sound recorded by an observer who is standing in air is 

(1) 200 Hz

(2) 3000 Hz

(3) 120 Hz

(4) 600 Hz

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