1. The ability to focus the image of an object at different distances on the

retina.

a. accommodation

c. regular reflection

b. dispersion d. none of the above

2. Which property of light waves make the images seen in lenses?

a. refraction

c. interference

b. diffraction

d. polarization

3. A farsighted person needs a convex lens. This lens can make the image

fall

a. beyond the retina of the eye. c. on the retina of the eye.

b. before the retina of the eye. d. on the eyeball.

4. Why do objects appear visible and clear inside an open room during

daytime?

a. because of regular reflection c. because of internal reflection

b. because of diffused reflection d. because of refraction

5. When light travels from a less optically dense medium to an optically

denser one, it bends. Which statement describes the bending?

a. towards the normal

c. away from the normal

b. along the normal

d. none of the above