Immiscible transparent liquids A,B,C,D and E are placed in a rectangular container of glass with the liquids making layers according to their densities. The refractive index of the liquids are shown in the adjoining diagram. The container is illuminated from the side and a small piece of glass having refractive index 1.61 is gently dropped into the liquid layer. The glass piece as it descends downwards will not be visible in

A vessel is half filled with a liquid of refractive index μ. The other half of the vessel is filled with an immiscible liquid of refractive index 1.5μ. The apparent depth of vessel is 50% of the actual depth. The value of μ is

A ray of light from a denser medium strikes a rarer medium at an angle of incidence i. If the reflected and refracted rays are mutually perpendicular to each other then what is the value of critical angle ?

As shown in figure light P enters to slab at an angle 60° with normal and inside slab Q makes total internal reflection. Find minimum refractive index of slab.

The speed of light in media M1 and M2 is \[1.5\times 10^{8} m/s and 2.0\times 10^{8}\] respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the ray suffers total internal reflection, the value of i is :

If the critical angle for total internal reflection from a medium to vacuum is 30°, the velocity of light in the medium is

A transparent solid cylindrical rod has a refractive index of 2/√3. It is surrounded by air. A light ray is incident at the mid-point of one end of the rod as shown in the figure.

The incident angle θ for which the light ray grazes along the wall of the rod is

A point source of light is kept at a depth of h in water of refractive index 4/3. The radius of the circle at the surface of water through which light emits is

Figure shows a mixture of blue, green and red coloured rays incident normally on a right angled prism. The critical angles of the material of the prism for red, green and blue are 46°, 44° and 43° respectively. The arrangement will separate.

A light ray travelling in a glass medium is incident on glass-air interface at an angle of incidence q. The reflected (R) and transmitted (T) intensities, both as function of q, are plotted. The correct figure is : (θc = critical angle)