Power of Accommodation

Q. The ability of an eye to adjust its focal length by itself to see nearby and distant objects is called as ______________.

1. power of an eye
2. power of astigmatism
3. Power of accommodation
4. power of lens

Q.

What is the nature of the image formed on the retina of a human eye?

1. Real, inverted and highly diminished.
2. Real, erect and enlarge.
3. Virtual, erect and highly diminished.
4. Virtual, inverted and enlarge.

Q. Contraction of the ciliary muscles ____ the focal length.

1. none of these
2. does not change
3. increases
4. decreases

Q.

If a person is reading a novel, then his ciliary muscles:

1. contract

2. expand

3. remains in the previous position

4. can't say

Q.

The ciliary muscles in an eye change the focal length of an eye lens to focus distant or nearby objects clearly, this ability of an eye is known as the power of an eye.

1. False
2. True

Q.

When the ciliary muscles are relaxed, then the focal length of the eye lens ___.

1. first increases then decreases

2. remains constant

3. increases

4. decreases

Q.

When one is seeing things that are nearby, the ciliary muscles contract to decrease the focal length of the eye lens.

1. False

2. True

Q.

Two lenses having powers +2D and -4D respectively are put together. Power of the combination would be

1. -2D

2. +2D

3. -4D

4. +4D

Q.

Resolving Power means how clearly we can differentiate between colours.

1. True

2. False

Q.

Ciliary muscles are responsible for changing the focal length of the eye lens according to the distance of the object.

1. True

2. False