# Deviation delta produced by a prism of angle A, which is assumed to be small, made of a material of refractive index mu is given by

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Deviation delta produced by a prism of angle A, which is assumed to be small, made of a material of refractive index mu is given by
A. delta=(mu-1)A
B. delta=(mu+1)A
C. mu=(si n(A+delta)/(2))/(si nA/2)
D. delta=((mu-1))/((mu+1))A

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