Focal length of a thin convex lens is 30 cm. At distance of 10 cm from the lens there is a plan refracting surface of refractive index `3//2`. Where w the parallel rays incident on lens converge ?

The focal length of a thin convex-lens is 30cm. At a distance of 10 cm from the lens there is a plane refracting surface fo refractive inidex 3//2 Where will parallel rays incident on lens converge?

The focal length of a thin convex-lens is 30cm. At a distance of 10 cm from the lens there is a plane refracting surface fo refractive inidex 3//2 Where will parallel rays incident on lens converge?

Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal length of lens when immersed in a liquid of refractive index 1.25 will be

Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal length of lens when immersed in a liquid of refractive index 1.25 will be

Focal length of a convex lens of refractive index 1.5 is 2 cm.Focal length of lens,when immersed in a liquid of refractive index of 1.25 will be

Focal length of a thin lens in air, is 10 cm. Now medium on one side of the lens is replaced by a medium of refractive index mu = 2 . The radius of curvature of surface of leng, in contact with the medium, is 20 cm. Find the point on principal axis where parallel rays incident on lens from air parallel to axis will converge.

Focal length of a convex lens of refraction Index 1.5 Is 2 cm. The focal length of lens when immersed in a liquid of refractive index of 1.25 will be.

" 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 "