First slide

The lens

Question

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm. The image is formed on the other side of the lens at a distance

Moderate

A

20 cm
B

10 cm
C

40 cm
D

30 cm

Solution

$\frac{1}{f} = \frac{1}{v} - \frac{1}{u} (Given u = - 20 cm, f = 10 cm, v = ?) ∴ \frac{1}{10} = \frac{1}{v} - \frac{1}{(- 20)} \Rightarrow v = 20 cm$

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