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Please help me with this questionas soon as posssible?

Please help me with this questionas soon as posssible?
 

Question Image
Grade:12

1 Answers

Eshan
askIITians Faculty 2095 Points
2 years ago
Dear student,

From Snell’s law,sin i=\mu sin r
Hence​Slope of the curve=tan\theta=sin r/sin i=\dfrac{1}{\mu}=\dfrac{v}{c}
\implies v=c tan\theta

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