MHT CET Physics question
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
Answer: (D)
Solution
The wall receives Hz and acts as a source of this frequency; the driver, moving towards it, hears $ =
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