Question

A Ray of light travelling in air strikes the water surface at an angle of 40 degree calculate the refractive index of water if angle of reflection is 29 degree

Answer 1

Refractive index =
$\frac{ \sin(i) }{ \sin(r) } = \frac{ \sin(40) }{ \sin(29) } = 1.3(approx.)$

Answer 2

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