1.

Assertion : In interference and diffraction, light energy is redistributed. Reason : There is no gain or loss of energy, which is consistent with the principle of conservation of energy.

Answer»

If both assertion and REASON are TRUE and reason is the CORRECT explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :In interference and diffraction, light energy is REDISTRIBUTED. If it reduces in one region, producing a dark fringe, it increaes in another region, producing a bright fringe. There is no gain or loss of energy, which is CONSISTENT with the principle of conservation of energy.


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