Question

Where should a person stand straight from the pole of a convex mirror of focal length 2.0m on its axis so that the image formed becomes half of his original height?

• A. -2.60 m
• B. -4.0 m
• C. -0.5 m
• D. -2.0 m

Answer 1

The correct option is D -2.0 m

Magnification, $m=\frac{f}{(f-u)}$
$+\frac{1}{2}=\frac{200}{(200-u)}$
200 - u = 400
u = -200 cm
u = -2 m.