Question

When a light rays enters a medium with refractive index n2 from a medium with refractive index n1 at curved interface with radius of curvature R is given by

Answer 1

Hii friend,
I think you have written incomplete question.I have seen this question in different format.

# Complete question would be-
When a light ray enters a medium with refractive index n2 from a medium with refractive index n1 at curved interface with radius of curvature r is given by n2/v - n1/u = (n2-n1)/R . Now assume that the surface is plane and rewrite the formula with suitable changes .

# Solution-

For plane surface,

Radius of curvature will be infinity.

Putting this in formula for refraction at curved surface,

n2/v - n1/u = (n2-n1)/∞

n2/v - n1/u = 0

n2/v = n1/u

v/u = n2/n1

n2/n1=v/u

Hence solved n2/n1=v/u for plain surface.