1.

For an equilateral prism made of a material of Refractive index sqrt2, find the angle of minimum deviation for a ray of monochromatic light.

Answer»

SOLUTION :`n=SQRT2` and `A=60^@`
`n=[SIN(A+D)/2]/(sinA/2) sqrt2=[sin(60+D)/2]/SIN30^@`
`sqrt2/2=sin(60+D)/2 1/sqrt2=sin((60+D)/2)`
`(60+D)/2=45, D=30^@`


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