An engine driver moving towards a wall w...

An engine driver moving towards a wall with a velocity of `60 m//s` emits a note of 1400 Hz. Speed of sound in air is `340 m//s`. The frequency of the note after reflection from the wall as heard by the engine driver is

1600 Hz

1200 Hz

1000 Hz

2000 Hz

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TARGET PUBLICATION-Sound-Exercise

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