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प्रश्न
When a photon enters glass from air, which one of the following quantity does not change?
विकल्प
Velocity
Wavelength
Momentum
Energy
MCQ
उत्तर
Energy
Explanation:
When a photon enters glass from the air, its energy does not change, but its wavelength and velocity do, and thus its momentum (mv) does.
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The Photoelectric Effect
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