JEE · NEET Previous Year Question

A driver in a car, approaching a vertical wall notices that the frequency of his car horn, has changed from to , when it gets reflected from the wall. If the speed of sound in air is then the speed of the car is

Topic: JEE PYQ

Answer: B. Full step-by-step solution below.

  1. A
  2. B
  3. C
  4. D

Correct answer: B

Solution

(b) JEE Main 2020



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