Q.
An equilateral prism ABC is placed in air with its base side BC lying horizontally along x-axis. A light ray 3z+x=10 is incident at a point P on face AB of the prism.The value of μ of prism for which the ray grazes the face AC is
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a
32
b
23
c
2
d
2
answer is B.
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Detailed Solution
This ray falls normally on AB r1=0 , r2=A=C=600μ=1sin600=23
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