A spider is on the surface of a glass sphere with a refractive inndex of `1.5` . An insect crawls on the other side of the sphere as shown in Fig. For what maximum value of `theta` will the spider be able to still see the insect. Assume the spiders eye is in air.

A small black dot is marked on the surface of a glass spehre (mu=1.5) and is viewed from the other side.If radius of the sphere is 15 cm,find the position of the image of the dot.

A spider and a fly are on the surface of a glass sphere. As the fly moves on the surface, find the maximum area on the glass sphere for the spider to be able to see it? Assume that the radius of the sphere (R) is much larger than the sizes of the spider and the fly. take the refractive index of glass mu_(g) to be equal to sqrt(2) .

A spider and a fly are on the surface of a glass sphere. As the fly moves on the surface, find the maximum area on the glass sphere for the spider to be able to see it? Assume that the radius of the sphere (R) is much larger than the sizes of the spider and the fly. take the refractive index of glass mu_(g) to be equal to sqrt(2) .

A spider and a fly are on the surface of a glass sphere. As the fly moves on the surface, find the maximum area on the glass sphere for the spider to be able to see it? Assume that the radius of the sphere (R) is much larger than the sizes of the spider and the fly. take the refractive index of glass mu_(g) to be equal to sqrt(2) .

A glass sphere of refractive index 1.5 forms the real image of object O at point I as shown in the figure when kept in air of refractive index 1 . If the value of x is kR . Find k

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.