Question

prism with angle 60 , if the deviation angle is 16 , calculate the refractive index of the prism

Answer 1

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Answer 2

Given: Angle of prism= 60 degree

           Deviation angle= 16

To find the refractive index of the prism, use the expression for  deviation angle in terms of refractive angle.

Explanation:

The expression for the angle of deviation for the prism is as follows;

$\delta =A(\mu -1)$

Here, A is the angle of prism, $\mu$ is the refractive index and $\delta$ is the angle of deviation.

Calculate the refractive index.

Put $A=60^{\circ}$ and $\delta= 16$ in the above expression.

$16 =(60^{\circ})(\mu -1)$

$0.267 =(\mu -1)$

$\mu= 1.267$

Therefore, the refractive index of the prism is $\mu= 1.267$.