Question

A tiny mirror M is fixed on a piece of cardboard placed on a table. The cardboard is illuminated by light from a bulb. The position of the eye with respect to the position of the bulb is shown in Fig. A, B, C and D. In which position light will be visible?

(A) (B) Eye Eye (C) Bulb (D) Fig. \( 16.2 \)

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer: (A), (B)

B

1. Light will be visible when after reflection it reaches our eyes.
2. As per the law of reflection angle of incidence is equal to the angle of reflection.
3. If we apply the same law in all four cases, we will find that only in cases A and B, reflected light is reaching the eyes.
4. Therefore, Light will be seen in cases A and B only.

Hence, options (A) and (B) are correct.