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A light ray incident along vector 2hati+4hatj+sqrt(5)hatk strikes in the x-z from medium of refractive index sqrt(3) and enters into medium II of refractive index is mu_(2). The value of mu_(2) for which the value of angle of refraction becomes 90^(@) is |
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Answer» `(4sqrt(3))/5` `1-cos^(2)theta_(C)=((mu_(2))/(mu_(1)))^(2)` `1-(hatn.hatp)^(2)=((mu_(2))/(mu_(1)))^(2)` `1-[4/(sqrt(25))]^(2)=((mu_(2))/(mu_(1)))^(2)IMPLIES(mu_(2))/(mu_(1))=3/5` `implies mu_(2)=(3sqrt(3))/5` |
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