A ray of light travelling in air is incident at grazing angle (incidence angle = 90^(@)) on a medium whose refractive index depends on the depth of the medium. The trajectory of the light in the medium is a parabola, y=2x^(2). Find, at a depth of 1 m in the medium (i) the refractive index of the medium and (ii) angle of incidence phi.

A ray of light travelling in air is incident at grazing angle (inciden

1.	A ray of light travelling in air is incident at grazing angle (incidence angle = 90^(@)) on a medium whose refractive index depends on the depth of the medium. The trajectory of the light in the medium is a parabola, y=2x^(2). Find, at a depth of 1 m in the medium (i) the refractive index of the medium and (ii) angle of incidence phi.
Answer» ANSWER :`mu=3, SIN^(-1) (1//3)`

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