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Question

Assertion : Photosensitivity of a metal is high if its work function is small.

Reason : Work function hf0 where f0 is the threshold frequency.
 


  1. Both assertion and reason are true but reason is not the correct explanation of the assertion.

  2. Assertion is false but reason is true.
  3. Assertion and reason both are false.

  4. Assertion is true but reason is false.

  5. Both assertion and reason are true and the reason is the correct explanation of the assertion.


Solution

The correct option is A

Both assertion and reason are true but reason is not the correct explanation of the assertion.


Less work function means less energy is required for ejecting out the electrons.

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