The - plane separates two media and of refractive indices and

PHYSICS · Single correct · A Level · Physics · Waves · Waves

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)

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

(b)

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

(c)

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

(d)

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