Write the structure of eye lens and state the role of ciliary museles in the human eye.

Draw a labelled ray diagram to illustrate the dispersion of a narrow beam of white light when it passes through glass prism.

A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

No rainbow could be observed from the surface of the moon by the astronauts moon by the astronauts. What could be the possible reason?

What shape are your eye-lenses:

1. When you look at your hand?
2. When you look at a distant tree?

Give the function of the following.

1. Cornea.
2. Iris.

Among animals, the predators (like lions) have their eyes facing forward at the front of their heads, whereas the animals of prey (like rabbit) usually have eyes at the sides of their head. Why is this so?

How many surfaces bound a prism? How many refractions does a beam of white light suffer, when it is passed through a prism?

If a milky of cloudy membrane grow over the eye lens, then which defect is the person suffering from?