AB and CD are surfaces ot two slabs as shown in Figure . The medium between the slabs has refractive indes 2. Refractive indes of the slab above Ab is `sqrt(2)` and below CD is `sqrt(3)` . Find the minimum angle of incidence at Q, so that the ray is totally reflected by both the slabs.

AB and CD are surfaces of two slabs as shown in figure. The medium between the slabs has refractive index 2, refractive index of slab above AB is sqrt2 and below CD is sqrt3 . Find the minimum angle of incidence, so that the ray is totally reflected by both the slabs.

AB and CD are two slabs[Fig.2.61.].The medium between the slabs has refractive index 2.Find the minimum angle of incidence at Q, so that the ray is totally reflected by both the slabs. .

AB and CD are two slabs. The medium between the slabs has refractive index 2 . Find the minium angle of incidence of Q , so that the ray is totally reflected by both the slabs .

AB and CD are two slabs. The medium between the slabs has refractive index 2 . Find the minium angle of incidence of Q , so that the ray is totally reflected by both the slabs .

AB and CD are two slabs. The medium between the slabs has refractive index 2 . Find the minium angle of incidence of Q , so that the ray is totally reflected by both the slabs .

Refractive index of slab R if refracted ray cd is parallel to incident ray ab, is

Refractive index of a rectangular glass slab is mu = sqrt(3) . Alight ray incident at an angle 60° is displaced laterally through 2.5 cm. Distance travelled by light in the slab is

A rectangular slab ABCD, of refractive index n_1 , is immersed in water of refractive index n_2(n_1 lt n_2) . A ray of light is incident at the surface AB of the slab as shown in Fig. Find the maximum value of angle of incidence alpha_(max) , such that the ray comes out only from the other surface CD.

A rectangular slab ABCD, of refractive index n_1 , is immersed in water of refractive index n_2(n_1 lt n_2) . A ray of light is incident at the surface AB of the slab as shown in Fig. Find the maximum value of angle of incidence alpha_(max) , such that the ray comes out only from the other surface CD.

A rectengular glass slab ABCD of refractive index n_1 is immersed in water of refractive index n_2(n_1gtn_2) . A ray of light is incident at the surface AB of the slab as shown. The maximum value of the angle of incidence alpha_max such that the ray comes out only from the other surface CD is given by