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A prism of refracting angle 4^(@) is mad...

A prism of refracting angle `4^(@)` is made of a material of refractive index 1.652. Find its angle of minimum deviation.

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`A=4^(@),mu=1.652,delta=?`
Substituting in `delta=A(mu-1)=4^(@)(1.652-1)=4^(@)xx0.652=2.608^(@)`
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