Question

Focal length of convex mirror is 20cm . Object placed 60cm Infront of mirror image nature and position​

Answer 1

Refer to the Attachment ✌️

Answer 2

Solution :

Given:

The focal length of the convex mirror is 20 cm. Am object is placed 60 cm infront of the mirror.

We know that:

$\implies$ $\huge{\boxed{\sf{ \frac{1}{f} = \frac{1}{v} + \frac{1}{u}}}}$

By substituting the values:

$\implies$ $\sf{ \frac{1}{20} = \frac{1}{v} - \frac{1}{60}}$

$\implies$ $\sf{ \frac{1}{v} = \frac{1}{20} + \frac{1}{60}}$

$\implies$ $\sf{\frac{1}{v} = \frac{60 + 20}{20 \times 60}}$

$\implies$ $\sf{\frac{1}{v} = \frac{80}{1200}}$

$\implies$ $\sf{ \frac{1}{v} = \frac{1}{15}}$

$\implies$ $\sf{v = 15 \: cm}$

Therefore: v = 15 cm