A photon of light enters a block of glass after travelling through vacuum. The energy of the photon on entering the glass block

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Increases because its associated wavelength decreases

decreases because the speed of the radiation decreases

stays the same because the speed of the radiation and the associated wavelength do not change.

stays the same because the frequency of the radiation does not change

answer is D.

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Detailed Solution

The frequency of light does not change with medium.from equation E=hϑ we can see that energy will also remain same.

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