Figure 10.1 shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is

(a)

B.

C. 1/

D.

A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

Under which of the following conditions a concave mirror can form an image larger than the actual object?

A light ray enters from medium A to medium B as shown in Figure 10.2. The refractive index of medium B relative to A will be

Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the Figure10.3. Which of the following could be inside the box?