consider three congerging lenses `L_1, L_2 and L_3` having identical geometrical construction. The index of refraction of `L_1 and L_2 are mu_1 and mu_2` respectively. The upper half of the lens `L_3` has a refractive index `mu_1` and the lower half has `mu_2`. A point object O is imaged at `O_1` by the lens `L_1 and at O_2` by the lens `L_2` placed in same position . If `L_2` is placed at the same place.

Consider three converging lenses L_1, L_2 and L_3 having identical geometrical construction. The index of refraction of L_1 and L_2 are mu_1 and mu_2 respectively. The upper half of the lens L_3 has a refractive index mu_1 and the lower half has mu_2 . A point object O is imaged at O_1 by the lens L_1 and at O_2 by the lens L_2 placed in same position . If L_3 is placed at the same place.

Consider three converging lenses L_1, L_2 and L_3 having identical geometrical construction. The index of refraction of L_1 and L_2 are mu_1 and mu_2 respectively. The upper half of the lens L_3 has a refractive index mu_1 and the lower half has mu_2 . A point object O is imaged at O_1 by the lens L_1 and at O_2 by the lens L_2 placed in same position . If L_3 is placed at the same place.

In Fig., there are two convex lenses L_1 and L_2 having focal lengths F_1 and F_2 respectively. The distance between L_1 and L_2 will be : .

If the refractive index of convex lens and surrounding medium be mu_1 and mu_2 respectively then for convex lens to act as concave lens when

Consider three geometrically identical concave lenses A, B and C. A is made of material of refractive index mu_(1) , B is made of material of refractive index mu_(2) . Lens C is constructed in such a way that half of the lens above principal axis is made of material of refractive index mu_(1) , and half of the lens below principal axis is made of material of refractive index mu_(2) . Image of an object O as shown in figure is formed at I_(1) when lens A is used and the image is formed at I_(2) when lens B is used at the same location. Now the lens C is placed at the same location.

In the figure given below there are two convex lenses L1 and L2 having focal lengths F1 and F2 respectively. The distance between L1 and L2 will be

If a convex lens of refractive index mu _l is placed in a medium of refractive index mu_m Such that mu_l > mu_m > mu_(air) then

If a convex lens of refractive index mu _l is placed in a medium of refractive index mu_m Such that mu_l > mu_m > mu_(air) then

A convex lens L_(1) and a concave lens L_(2) have refractive index (3)/(2) . Match the following two columns.