Question

What would happen if a glass plate is replaced by a plane mirror?

Answer 1

If glass plate is replaced by a plane mirror, the transmitted rays before will be reflected now. Due to the superposition between reflected and transmitted (now reflected) rays, uniform illumination will result.

Answer 2

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♦If glass plate is replaced by a plane mirror, the transmitted rays before will be reflected now.

♦ Due to the superposition between reflected and transmitted (now reflected) rays, uniform illumination will result.

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