(a) For a plane monochromatic wave proceeding from an optical medium of speed into…

PHYSICS · Subjective · CBSE · Physics · Wave Optics · Wave Optics

Problem

(a) For a plane monochromatic wave proceeding from an optical medium of speed

v_1

into another medium of speed

v_2

, obtain an expression that connects the angles

i

and

r

made by the incident and refracted wave normals with the normal to the interface. (b) Hence show that

\dfrac{\sin i}{\sin r}=\dfrac{v_1}{v_2}.

3.00\times10^{8}\,\text{m s}^{-1}

in air and

2.25\times10^{8}\,\text{m s}^{-1}

in crown glass. Calculate the refractive index of crown glass with respect to air.