WBCS.LIVE practice question

A person burned a firecracker in front of a cliff and heard its echo 5s after it burst. The distance of the cliff from the person, if the speed of the sound is 340 m/s, is close to:

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 1700 m
  2. 170 m
  3. 85 m
  4. 850 m

Correct answer and explanation

Correct answer: 850 m