Rayleigh's criteria for a rough surface is: (where letters carry their – McqOptions

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1.	Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).
A.	h > λ/Δ cos θ
B.	h = λ/8 cos θ
C.	h > λ/8 cos θ
D.	h < λ/8 cos θ
Answer» D. h < λ/8 cos θ

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