Question

A tall man of height $6$ feet wants to see his full image then the minimum required length of the mirror will be.

• A. $3$ Feet
• B. $6$ Feet
• C. $12$ Feet
• D. None of these.

Answer 1

The correct option is A

$3$ Feet

Explanation for the correct option:

The required length of the mirror must be half of the image of the tall man's height. Therefore,

$$\begin{gathered} \mathrm{Length}\mathrm{of}\mathrm{the}\mathrm{mirror}=\frac{6\mathrm{feet}}{2} \\ =3\mathrm{feet} \end{gathered}$$

Hence, Option A is the correct option.