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NEET2014PhysicsWaves and SoundActual

Assertion: The periodic time of a hard spring is less as compared to that of a soft spring. Reason: The periodic time depends upon the spring constant, which is large for hard spring.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

B. If both assertion and reason are true but reason is not the correct explanation of assertion.

Step-by-step solution

The time period of a oscillating spring is given by, T=2 m k i.e. T 1 k . Since the spring constant is large for hard spring, therefore hard spring has a less periodic time as compared to soft spring.

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