A train moving towards a tunnel in a huge mountain with a speed of 12 m/s sounds its whistle. Sound is reflected from the mountain. If the driver hears 6 beats per second & speed of sound in air is 332 m/s, the frequency of the whistle is

80 Hz

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120 Hz

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160 Hz

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240 Hz

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Solution

The correct option is A 80 Hz
So, the answer will be 80Hz(A).

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A train moving towards a tunnel in a huge mountain with a speed of 12 m/s sounds its whistle. Sound is reflected from the mountain. If the driver hears 6 beats per second & speed of sound in air is 332 m/s, the frequency of the whistle is

The correct option is A 80 HzSo, the answer will be 80Hz(A).

The correct option is A 80 Hz
So, the answer will be 80Hz(A).