Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Ray Optics

Question:

Options:

a

b

c

d

Correct Answer:

a

Explanation:

$\text{If mirror makes n revolution per second then the reflected ray will make 2n revolution per second}$

$\text{Speed of light on Screen is} 2n \times 2\pi R = 4n\pi R$