Newton's rings, observed in an optical interference experimental set-u

1.	Newton's rings, observed in an optical interference experimental set-up, are loci of points of:
A.	unequal thickness and equal inclination
B.	equal thickness only
C.	both equal inclination and equal thickness
D.	equal inclination only
Answer» C. both equal inclination and equal thickness

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Newton's rings, observed in an optical interference experimental set-up, are loci of points of:

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