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When a photon enters glass from air, which one of the following quantity does not change? -

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Question

When a photon enters glass from air, which one of the following quantity does not change?

Options

  • Velocity

  • Wavelength

  • Momentum

  • Energy

MCQ

Solution

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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