Question

Observe the given picture carefully.
When the torch is lighted as shown in the image, a patch of light is obtained at point $B$. Which of the following must be kept at position $A$ to get this patch of light?​

• A. A sheet of white paper
• B. A mirror
• C. A glass sheet
• D. A wooden board

Answer 1

The correct option is B A mirror

Mirrors reflect the light that falls on them. This is because one of its surfaces is shiny and the other is coated.

If a patch of light is obtained on screen $B$ with a lighted torch, it follows that a mirror must be kept at position $A$.

Hence, option (c) is the correct answer.