Home
Class 12
PHYSICS
A lens behaves as a converging lens in a...

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is (refractive index of water `=1.33`)

A

Equal to unity

B

Equal to 1.33

C

Between unity and 1.33

D

Greater than 1.33

Text Solution

Verified by Experts

The correct Answer is:
C

Converging lens behave as diverging if `(n)_("medium") gt (n)_("lens")`.
Promotional Banner

Similar Questions

Explore conceptually related problems

A lense behaves as a converging lens is air and diverging lens in water. The refractive index of the lens material is -

A lens behaves as a converging lens in air and as a diverging lens in water. If refractive index of water is 1.33 , the refractive index of the material of the lens will be

A lens behaves as a diverging lens in air and converging lens in water.The refractive index of the material of the lens is __________ .

If a substance is behaving as convex lens in air and concave lens in water then which one of the following is its refractive index?

" I length of convex lens in air is "10cm" .Its focal length in water is (refractive index of glass "=3/2" ,refractive index of water "

(i) If f = + 0.5 m , what is the power of the lens ? (ii) The radii of curvature of the faces of a double convex lens are 9 cm and 15 cm . Its focal length is 12 cm . What is the refractive index of glass ? (iii) A convex lens has 20 cm focal length in air. What is the focal length in water ? (Refractive index of air-water = 1.33 , refractive index of air-glass = 1.5 ).

Assertion : A convex lens made of material of refractive index 1.2 behaves as diverging lens when kept in water of refractive index 4//3 . Reason : A convex lens made of material of refractive index 1.2 behaves as converging lens when placed in air.

An equiconcave diverging lens of focal length F is cut into two equal halves. The two halves are turned around and joined with some liquid between them.The lens obtained is converging with focal length F. If the refractive index of the liquid is 3 then what is the refractive index of the lens?