Question

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position of the image.

• A. 6 cm
• B. - 6 cm
• C. 30 cm
• D. - 30 cm

Answer 1

The correct option is A 6 cm

$u=-10\text{cm},f=+15\text{cm}$
$\frac{1}{u}+\frac{1}{v}=\frac{1}{f}$
$\frac{1}{v}=\frac{1}{15}+\frac{1}{10}=\frac{1}{6}$
$v=6\text{cm.}$