A train blows its whistle as it approaches a stationary listener. The frequency of the whistle apparent to the listener is n₁ if the train's speed is 34 m/s and n₂ if the speed is 17 m/s. If the speed of sound in air is 340 m/s, the ratio n1/n2 is. - VgyanHub

Question:

A train blows its whistle as it approaches a stationary listener. The frequency of the whistle apparent to the listener is n₁ if the train’s speed is 34 m/s and n₂ if the speed is 17 m/s. If the speed of sound in air is 340 m/s, the ratio n₁/n₂ is.

Options :

(a) 1/2
(b) 18/19
(c) 19/18
(d) 2

Answer :

(c) 19/18

Answer Steps :

step 1

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