What is the pattern of fringes, if an optical flat is resting on any h – McqOptions

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1.	What is the pattern of fringes, if an optical flat is resting on any hill?
A.	Central band dark
B.	Concentric dark and light band fringes
C.	Straight dark fringes
D.	Central band may be light or black
Answer» C. Straight dark fringes

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