A train moves towards a stationary observer with speed 34 m/s. The train sounds a whistle…
Physics · JEE Advanced · NTA Exams — Oscillations and Waves
A train moves towards a stationary observer with speed 34 m/s. The train sounds a whistle and its frequency registered by the observer is f1. If the train’s speed is reduced to 17 m/s, the frequency registered is f2. If the speed of sound is 340 m/s, then the ratio f1/f2 is
- 18/19
- 1/2
- 2
- 19/18 .
Answer
(D) 19/18 .
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