First slide

Spherical/Curved mirrors

Question

The image formed by a convex mirror of focal length 30cm is a quarter of the size of the object. The distance of the object from the mirror is

Moderate

A

30 cm
B

90 cm
C

120 cm
D

60 cm

Solution

$m = \frac{f}{(f - u)} \Rightarrow (+ \frac{1}{4}) = \frac{(+ 30)}{(+ 30) - u} \Rightarrow u = - 90 cm$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App