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  9. Q74

JPSC 2023 · Question 74 of 199

Which of the following is a cause of echo?

General Science

  1. AAbsorption of sound
  2. BTransmission of sound
  3. CReflection of soundCorrect
  4. DRefraction of sound

Answer: C. Reflection of sound

Explanation

An echo is produced by the reflection of sound waves from a distant surface.

Source: JPSC Combined Civil Services (PT) 2023 (Advt 01/2024), GS Paper-I, Booklet Series-B; answers per official model answer key

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