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  9. Q18

CGPSC 2021 · Question 18 of 93

A sound wave has frequency of 4 kHz and its wavelength is 35 cm, then how much time will it take to travel a distance of 3 km?

General Knowledge

  1. A21.4 sec
  2. B2.14 secCorrect
  3. C12.4 sec
  4. D1.24 sec

Answer: B. 2.14 sec

Explanation

This problem asks us to determine the time a sound wave will take to travel a specific distance, given its frequency and wavelength. To solve this, we need to first calculate the speed of the sound wave using the provided frequency and wavelength, and then use that speed along with the given distance to find the required time.

Source: CGPSC 2021 official paper

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