Question

A light wave travels through glass (n = 1.50) at an angle of 35degrees. What angle does it have when it passes from the glass into water (n = 1.33)? Use the equation .

A.40.3degrees
B.0.647degrees
C.0.509degrees
D.30.6degrees

Answer 1

Explanation :

It is given that the light waves travels through glass into water.

Refractive index of glass, $n_1=1.5$

Refractive index of water, $n_2=1.33$

$\theta_1=35^0$

$\theta_2=?$

Using Snell's law

$\dfrac{sin\ \theta_1}{sin\ \theta_2}=\dfrac{n_2}{n_1}$

Where $\theta_2$ is the angle when the light passes from the glass into water.

$\dfrac{sin(35)}{sin\ \theta_2}=\dfrac{1.33}{1.5}$

$sin\ \theta_2=0.64$

$\theta_2=39.7^0$

So, the correct option can be (A) " 40.3 degrees ".

Answer 2

Answer:

A - 40.3 degrees

Explanation: