Question

State whether true or false:

A graph between $sin{\theta }_1$ and $sin{\theta }_2$ is a straight line, where ${\theta }_1$ and ${\theta }_2$ are angles of incidence and refraction respectively.

• A. True
• B. False

Answer 1

Answer: (A)

Snell's law (also known as the Snell–Descartes law and the law of refraction) is a formula used to describe the relationship between the angle of incidence and refraction when referring to light or other waves passing through a boundary between two different isotropic media such as water, glass, or air.

$\frac{sin{\theta }_1}{sin{\theta }_2}$$=\frac{v_1}{v_2}=\frac{{\lambda }_1}{{\lambda }_2}=\frac{n_2}{n_1}$

$\frac{sin{\theta }_1}{sin{\theta }_2}=constant$

So the graph is a straight line.