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A thin prism with refracting angle 5^(@)...

A thin prism with refracting angle `5^(@)` and having refracting index 1.6 is kept adjacent to another thin prism having refractive index. 1.5 such that one is inverted with respect to the other. An incident ray falling vertically on the first prism passes through the second prism without any deviation. Calculate the refracting angle of the second prism.

Text Solution

Verified by Experts

According to the condition, `(mu_(1) - 1) = (mu_(2) - 1)A_(2)`
`or, " " (1.6 - 1) xx 5^(@) = (1.5 - 1)A_(2) or, A_(2) = (0.6 xx 5^(@))/(0.5) = 6^(@)`
So the refracting angle of the second prism = `6^(@)` .
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