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Huygens' Principle

Light travels...

Question

Light travels faster in air than that in glass. This is accordance with

A

wave theory of light

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B

corpuscular theory of light

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C

neither (a) nor (b)

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D

Both (a) and (b)

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Solution

The correct option is C wave theory of light
Huygene's wave theory assumed that the light travels slower in glass than in air. That means for a given geometrical distance in glass, there will be more waves of light than in same distance in air. Consequently, it would seem that wavelength of light decreases as light propagates through air-glass interface.

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