Home
Class 12
PHYSICS
A convex lens (n = 1.5) of focal length ...

A convex lens (n = 1.5) of focal length `f_a` is immersed in carbon disulphide n = 1.6, how does the lens behave in the two cases?

Text Solution

Verified by Experts

When convex lens is immersed in carbon - disulphide, it will behave as a concave lens.
Promotional Banner

Similar Questions

Explore conceptually related problems

A convex lens (n = 1.5) of focal length f_a is immersed in water n = 1.33.

A thin lens of focal length + 12 cm is immersed in water (mu = 1.33). What is its new focal length ?

A particle executes a simple harmonic motion of amplitude 1.0 cm along the principal axis of a convex lens of focal length 12 cm. The mean position of oscillation is at 20 cm from the lens. Find the amplitude of oscillation of the image of the particle.

A point object O is placed on the principal axis of a convex lens of focal length f=20cm at a distance of 40 cm to the left of it. The diameter of the lens is 10. An eye is placed 60 cm to right of the lens and a distance h below the principal axis. The maximum value of h to see the image is

A concave lens is kept in contact with a convex lens of focal length 20 cm. The combination behaves as a convex lens of focal length 50 cm . Find the power of concave lens.

i. If f = 0.5 m for a glass lens, what is the power of the lens ? ii. The radii of curvature of the faces of a double convex lens are 10cm and 15cm . Its focal length is 12cm. What is the refractive index of glass ? iii. A convec lens has 20 cm focal length in air. what is focal length in water ? (Refractive index of air-water = 1.33, refractive index for air-glass = 1.5)

Two convex lenses f focal length 20 cm each are placed coaxially with a separation of 60 cm between them. find the image of a distance object formed by the combination by a. using thin les formula separately for the two lenses and b. using the equivalent lens. Note that although the combination forms a real image of as distance object on the other side, it is equivalent to as diverging lens as far as the locatiion of the final image is concerned.