Question

Arrange the following in the order in which a light ray travels to enable vision in the human eye.

• A. External light
• B. Cornea
• C. Pupil
• D. Eye lens
• E. Retina

Answer 1

The light from external object/source falls on the eye. It passes through cornea which is a transparent covering over the eye. Then the light reaches pupil which regulates it's intensity. Through pupil, the light crosses the convex eyelens and gets converged at retina which is the screen for the image.