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A ray of light passes through an equilateral glass prism in such a manner that the angle of incidence is equal to the angle of emergence and each of these is equal to (3)/(4)th of the angle of prism. The refractive index of the prism material is |
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Answer» `(3)/(2)` `therefore" Angle of MINIMUM deviation "delta_(m)=(2xx45^(@))-60^(@)=30^(@)` `therefore""n=(sin((A+delta_(m))/(2)))/(sin((A)/(2)))=(sin(60^(@)+30^(@))/(2))/(sin((60^(@))/(2)))=(sin45^(@))/(sin 30^(@))=(1//sqrt2)/(1//2)=sqrt2` |
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