Home
Class 12
PHYSICS
A plano-convex lens is made of refractiv...

A plano-convex lens is made of refractive index 1.6. The radius of curvature of the curved surface is 60 cm. The focal length of the lens is

A

50 cm

B

100 cm

C

200 cm

D

400 cm

Text Solution

Verified by Experts

The correct Answer is:
B
`(1)/(f) = (n- 1) ((1)/(R_(1)) - (1)/(R_(2)))`
`rArr f = (R )/(n - 1) = (60)/(1.6-1 ) = 100 cm " " [R_(1) = R, R_(2) = infty]`
Promotional Banner

Similar Questions

Explore conceptually related problems

Aplanoconvex lens is made of material of refactive index 1.6 The radius olf curvature of the curred surface is 60 cm. The facal length of the lens is

A plano-convex lens is made of material having refractive index 1.5. The radius of curvature of curved surface is 60 cm. The focal length of the lens is ______ cm.

A plano-convex lens is made of glass of refractive index 1.6. the radius of curvature of its curved surface is 30 cm. What is the focal length of the lens ?

A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is

The plane surface of a plano-convex lens of refracting index 1.5, is silvered. The radius of curvature of curved surface is R. Find the focal length of the mirror thus formed.

A plano-convex lens is made of refractive index of 1.6. The focal length of the lens is

A plano-concave lens is made of glass of refractive index 1.5 and the radius of curvature of its curved face is 100 cm. What is the power of the lens?