Q52 / 270 · NDA 2018 (Phase 2) · General Ability

Statement I : Sound wave cannot propagate in vacuum. Statement II : Sound waves are elastic waves and require a medium to propagate.

  • Correct answer
    A
    Both the statements are individually true and Statement II is the correct explanation of Statement I
  • B
    Both the statements are individually true but Statement II is not the correct explanation of Statement I
  • C
    Statement I is the true but Statement II is false
  • D
    Statement I is false but Statement II is true

Solution

Sound waves are type of elastic waves in which particles are displaced and need a medium to propagate. In vacuum since there is no medium hence sound cannot be transferred from one place to another in absence of medium.

Hence, the correct answer is option: 'A'.

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