Question

a light ray is travelling in air is made from (a) glass surface (b) water surface .in which case the reflection will be more strong​

Answer 1

Let i and r be the agle of incidence and angle of reflection respectively.

From the figure,

i+90+r=180

r=90−i

We have the equation for refractive index,

μ=

sinr

sini

⟹μ=

sin(90−i)

sini

=

cosi

sini

=tani

solution