Question

A ray of light travelling in air strikes an angle of 45 degree . Calcuate the refractive index of water if the angle of refraction is 30 degree

Answer 1

Here Angle of incidence = i= 45 °

        Angle of refraction = r= 30°

     Refractive index = n = i/r

                                        = 45/30= 1.5 (no unit)

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