Home
Class 12
MATHS
A biconvex thin lens is prepared from gl...

A biconvex thin lens is prepared from glass of refractive index `mu_(2)=(3)/(2)`. The two conducting surfaces have equal radii of 20 cm each. One of the the surface is silvered from outside to make it reflecting. It is placed in a medium of refractive index `mu_(1)=(5)/(3)`. It acts as a

A

a^3=4(ab-c)

B

a^3=4(ab-2c)

C

a^3=ab-c

D

a^3=ab-2c

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A biconvex thin lens is prepared from glass of refractive index 3//2. The two bounding surfaces have equal radii of 25cm each. One of the surfaces is silvered from outside to make it reflecting. Where should an object be placed before this lens so that the image coincides with the object.

A biconvex thin lens is prepared from glass (mu=1.5) , the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Whee should an object be placed before this lens so that the image is formed on the object itself?

A biconvex thin lens is prepared from glass (mu=1.5) , the two bounding surfaces having equal radii of 25 cm each. One of the surfaces is silvered from outside to make it reflecting. Whee should an object be placed before this lens so that the image is formed on the object itself?

An equiconvex lens is made from glass of refractive index 1.5. If the radius of each surface is changed from 5cm to 6cm, then the power

A biconvex lens is made of glass with refractive index 1.5 and has radii of curvature 20 cm and 30 cm. If the 20 cm surface is silvered, what is the effective focal length of the mirror formed?

A biconvex lens made of glass (refractive index 1.5) has two spherical surfaces having radii 20cm and 30cm. Calculate its focal length.

A concavo-convex lens is made of glass of refractive index 1.5. The radii of curvature of its two surfaces are 30 cm and 50 cm. Its focal length when placed in a liquid of refractive index 1.4 is

A double convex lens has two surfaces of equal radii R and refractive index m=1.5, we have

A planocovex lens is made of a material of refractive in mu=1.5 The radius of curvature of curved surface of the lens is 20.cm. If its plane surface3 is silvered, the focal length of the silvered lens will be

A thin lens made of glass of refractive index mu = 1.5 has a focal length equal to 12 cm in air. It is now immersed in water ( mu=4/3 ). Its new focal length is