Question

Which of the following graphical variation produces a straight line?

• A. Angle of incidence versus angle of reflection
• B. Angle of incidence versus angle of refraction
• C. Sine of angle of incidence versus angle of refraction
• D. All of these

Answer 1

Answer: (A)

Angle of incidence versus angle of reflection

We know that $\mu =\frac{sin{\theta }_1}{sin{\theta }_2}=constant$

where ${\theta }_1=$ angle of incidence and ${\theta }_2=$ angle of reflection.

From this relation we can understand that $sin{\theta }_1\propto sin{\theta }_2$

so ${\theta }_1\propto {\theta }_2$, Hence graph between angle of incidence and angle of reflection is a straight line. which is shown in given graph.