First slide

The lens

Question

A convex lens has a focal length f. It is cut into two parts along the dotted line as shown in the figure. The focal length of each part will be

Moderate

A

$\frac{f}{2}$
B

$f$
C

$\frac{3}{2} f$
D

2f

Solution

$f = \frac{R}{2 (μ - 1)}, f = \frac{R}{(μ - 1)} \Rightarrow f = 2 f$

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