Physics

Problem

The

x-z

plane separates two media

A

and

B

of refractive indices

\mu_1 = 1.5

and

\mu_2 = 2

. A ray of light travels from

A

B

. Its directions in the two media are given by unit vectors

\vec{u}_1 = a\hat{i} + b\hat{j}

and

\vec{u}_2 = c\hat{i} + d\hat{j}

. Then: (a)

\frac{a}{c} = \frac{4}{3}

(b)

\frac{a}{c} = \frac{3}{4}

(c)

\frac{b}{d} = \frac{4}{3}

(d)

\frac{b}{d} = \frac{3}{4}