CBSE Class 12 Physics Notes: Wave Optics – Interference in the Thin Films

A ray of light incident on a thin film of thickness ‘t’ gets partially reflected and refracted at A at surface I and thereafter it gets reflected and refracted at B of surface II. The rays after emerging in the first medium interfere. Now the inference  will depend upon the path difference between AD and ABC, as beyond CD path difference is zero.

CBSE Class 12 Physics Notes: Wave Optics – Interference in the Thin Films Image by AglaSem

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