A glass prism of refracting angle 60° and refractive index 1.5 is completely immersed in water of refractive index 1.33. Calculate the angle of minimum deviation of the prism in this situation, sin-1 0.56 = 34.3°.

= 1.5/1.33

= (3/2)/(4/3) = 9/8


We get,

Therefore, The angle of minimum deviation is 8.60

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