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MHT CET Physics question

PhysicsWave OpticsMHT CET

A parallel beam of light of intensity is incident on a glass plate, of light is reflected by upper surface and of light is reflected from lower surface. The ratio of maximum to minimum intensity in interference region of reflected rays is

Answer: (A)

Solution

The upper surface reflects , the transmitted is half reflected from the lower surface, , so

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Question ID VK-077304