Question

a ray of light strikes a transparent surface at the angle 60 degreeif the angle between reflected and refracted ray is. a right angle the refractive index of medium is​

Answer 1

Answer:

Let  i  be the angle of incidence & reflection &  r  be the angle of refraction in the optical medium.

As per given condition, the angle between reflected & refracted rays is  90∘  hence we have

i+r+90∘=180∘

r=90∘−i

If  n  is the refractive index of optical medium w.r.t. air then using Snell’s Law as follows

sini=nsinr

sini=nsin(90∘−i)

sini=ncosi

n=tani

where ,  i  is the angle of incidence on transparent (optical) surface which should be known

Explanation: