Question

d) 1/4 cm 5. Light rays are passing from air to glass. Among red, blue green and violet light, the refractive indes of glass will be greatest for- a) Red b) Blue c) Green d) Violet​

Answer 1

Answer:

For total internal reflection, i>ic

Here i=450

sinrsini=μ

sin450>μ1

μ>21=1.414

μred<1.414 but μgreen>1.414  and μviolet>1.414.

Hence, green and violet will be totally internally reflected.

Red will be refracted.