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  • A ray of light on passing through an equilateral glass prism, suffers a minimum deviation equal to the angle of the prism. The value of refractive index of the material of the prism is ___________ .  

A ray of light on passing through an equilateral glass prism, suffers a minimum deviation equal to the angle of the prism. The value of refractive index of the material of the prism is ___________ .

 

Answers (1)

\\\mu=\frac{sin(A+D)/2}{sinA/2}\\Given \ D=A\ therefore\\\mu=\frac{sin A}{sinA/2}=\frac{sin60}{sin30}\\=\sqrt{3}(\text{The prism is equilateral. Therefore }A=60^0)

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Safeer PP

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