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  9. Q12

CGPSC 2020 · Question 12 of 100

Which of the. following statements is/are true in relation to sound waves? Statement I: Speed of sound decreases when we go from solid to a gaseous state. Statement II: In any medium, as we decrease the temperature, the speed of sound increases. Statement III: Speed of sound is less in the aluminium medium than in glass medium

Science & Tech

  1. AStatement I, II and III all are true
  2. Bonly Statement I and II are true
  3. Conly Statement I is trueCorrect
  4. Donly Statement II and III are true

Answer: C. only Statement I is true

Explanation

Understanding the properties of sound waves is crucial for comprehending how sound propagates through different mediums. The speed of sound depends on the characteristics of the medium it travels through, such as its state (solid, liquid, gas), temperature, and elasticity.

Source: CGPSC 2020 official paper

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