A rod of glass `( mu = 1.5)` and of square cross section is bent into the shape shown in the figure. A parallel beam of light falls on the plane flat surface A as shown in the figure. If d is the width of a side and R is the radius of circular arc then for what maximum value of `(d)/(R)` light entering the glass slab through surface A emerges from the glass through B

A rod made of glass (mu = 1.5) and of square cross-section is equal is bent into the shape shown in figure. A parallel beam of light falls perpendicurly on the plane flat surface . A . Referring to the diagram, d is the width of a side & R is radius of inner semicircle. find the maximum value of ratio (d)/(R) so that all light entering the glass through surface A emerge from the glass through surface B.

Rays of light fall on a glass slab ( mu gtl)as shown in the figure. If mu at A is maximum and at b it is minimum, then what will happen to these rays?

A glass rod having square cross-section is bent into the shape as shown in the figure. The radius of the inner semi-circle is R and width of the rod is d. Find the minimum value of d//R so that the light that enters at A will emerge at B. Refractive index of glass is mu=1.5

A narrow parallel beam of light falls on a glass sphere of radius R and refractive index mu at normal incidence. The distance of the image from the outer edge is given by-

A portion of a straight glass rod of diameter 2 cm and refractive index 1.5 is bent into an arc of a circle of radius R cm and a parallel beam of light is incident on it as shown in figure. Find the smallest R which permits all the light to pass around the arc.

A ray of light is incident on a parallel-sided glass slab as shown in the figure. The angle of refraction for this ray of light is likely to be :