CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Combinations of Lenses & Mirrors

A Plano conve...

Question

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

A

R/2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

R

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

2R

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

1.5 R

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A 2R

Given,

Radius of curvature, $R$
Refractive index = $1.5$

Focal length of lens, $f = \frac{R}{(μ - 1)} = \frac{R}{(1.5 - 1)} = 2 R$

Suggest Corrections

thumbs-up

0

Similar questions

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 ___.

Q. Focal length of the plano-convex lens is when its radius of curvature of the surface is
R and n is the refractive index of the lens.

Q. The radius of the curvature of the convex surface of a plano-convex lens is

20

cm. If the refractive index of the material of the lens is

1.5

. Its focal length is:

Q. A double convex lens is made of glass of refractive index

1.5 .

If its focal length is

30 c m,

then radius of curvature of each of its curved surface is

Q. A thin plano-convex lens acts like concave mirror of focal length

0.2 m

when silvered at its plane surface. Refractive index of the material of lens is

1.5

. Radius of curvature of convex surface of the lens is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Combination of Lenses and Mirrors

PHYSICS

Watch in App

explore_more_icon

Explore more

Combinations of Lenses & Mirrors

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon