Question

Question 2 (of 5) 10.00 points 9 attempts left Check my work Sunlight strikes the surface of a lake at an angle of incidence of 34.0°. At what angle with respect to the normal would a fish see the Sun?

Answer 1

Refractive index of air $n_1=1$

Refractive index of water $n_2=1.333$

Angle of incidence of light ray $i=34.0\degree$

Snell's law $\frac{\sin i}{\sin r}=\frac{n_2}{n_1}$

$r=\sin^{-1}\left ( \frac{n_1}{n_2}\sin i \right )$

$r=\sin^{-1}\left ( \frac{1}{1.333}\sin 34.0\degree\right )$

$r=24.8\degree$

The light ray from the Sun makes an angle $24.8\degree$ with normal according to fish.