Home
Class 12
PHYSICS
A convex lens of focal length f is put i...

A convex lens of focal length `f` is put in contact with a concave lens of the same focal length. The equivalent focal length of the combination is :

A

0

B

`f`

C

`2f`

D

`oo`.

Text Solution

Verified by Experts

Promotional Banner

Similar Questions

Explore conceptually related problems

A convex lens of focal length cc"f" is put in contact with a concave lens of the same focal length. The equivalent focal length of the combination is :

A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. What is the nature and focal length of the combination ?

A convex lens of focal length 25 cm is placed coaxially in contact with a concave lens of focal length 20 cm. Determine the power of the combination. Will the system be converging or diverging in nature?

A convex lens of focal length f_1 is put in contact with concave lens of focal length f_2 . The combination which will behave as a converging lens is :

A parallel beam is incident on a convex lens of focal length f . It is then put in contact with a concave lens of focal length f//2 , the image will be

Find the power of a concave lens of focal length 2m

Find the power of a concave lens of focal length 2 m.