Question

Refractive index of a medium is n. The incidence angle is twice that of angle of prism. The angle of incidence is​

Answer 1

Answer:

according to Snell's law

Refractive index, μ=

sinr

sini

Given i=2r

∴μ=

sinr

sin2r

or μ=

sinr

2sinrcosr

or cos

−1

2

μ

=r

⇒i=2cos

−1

2

μ