Questions

Explain the role of the ciliary muscle in the change in the thickness of the eye lens when a student sitting in a classroom shifts his eyes from the letter written on the whiteboard to a distant object seen out of the window.

Write any two problems that may be seen in corneal injury.

Write the function of the retina in the human eye.

Write the function of the pupil in the human eye.

Write the function of the iris in the human eye.

Write the function of the lens in the human eye.

Write the function of the cornea in the human eye.

Write the function of the ciliary muscle in the human eye.

The focal lengths of the two lenses are 20cm and -20cm respectively. Mention the types of these two lenses. Out of these two lenses, which one forms a virtual and magnified image when an object is kept 16cm away from the lens? Explain it by drawing a scaled ray diagram.

How can the light dispersed by a prism be converted back into white light?