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NEETPhysicsWaves and Sound

Assertion : In organ pipe experiment, loop size will decrease as the water column length is increased. Reason : Frequency remains unchanged.

Options

  1. AIf both Assertion and Reason are correct 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 Assertion is false but Reason is true.

Correct answer

D. If Assertion is false but Reason is true.

Step-by-step solution

In the resonance tube, wavelength and loop size depend only on the tuning fork frequency, not on air column length. Thus, loop size does not decrease when water level changes (Assertion false). Frequency of tuning fork remains constant (Reason true).

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