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Please explain the concept of bi prism in wave optics!!?​

Answer»

Explanation:

Definition of biprism. : a triangular prism with vertex angle of nearly 180° used to obtain images of a SINGLE source in observing the INTERFERENCE of light. — called also Fresnel biprism.

A Fresnel Biprism is a thin DOUBLE prism placed base to base and have very small REFRACTING angle ( 0.5o). This is equivalent to a single prism with one of its angle nearly 179° and other two of 0.5 o each. The interference is OBSERVED by the division of wave front.



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