In the figure of the human eye (Fig.16.5), the cornea is represented by the letter

Two mirrors A and B are placed at right angles to each other as shown in Fig.16.4.

A ray of light incident on mirror A at an angle of 250 falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be

Which of the following statements is correct regarding rods and cones in the human eye?

Name the part of the eye which gives colour to the eyes.

Boojho while waving his hand very fast in front of his eyes, observes that his fingers appear blurred. What could be the reason for it?