WBCS.LIVE practice question

An echo is heard after 5s of the production of sound which moves with a speed of 340 m/s. What is the distance of the mountain from the source of sound which produced the echo?

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

Answer options

  1. 0.085 km
  2. 0.85 km
  3. 0.17 km
  4. 1.7 km

Correct answer and explanation

Correct answer: 0.85 km