MEDIUM
10th CBSE
IMPORTANT
Earn 100
The eyes of a person are focused (i) on a nearby object, and (ii) on a distant object, turn by turn. In which case the converging power of eye-lens will be the maximum?
Important Questions on The Human Eye and The Colourful World
MEDIUM
10th CBSE
IMPORTANT
What change is made in the eye to enable it to focus on objects situated at different distances? Illustrate your answer with the help of diagrams.
HARD
10th CBSE
IMPORTANT
How is the amount of light entering the eye controlled?
EASY
10th CBSE
IMPORTANT
What happens to the eye when you enter a darkened cinema hall from bright sunshine? Give reason for your answer.
EASY
10th CBSE
IMPORTANT
Why does it take some time to see objects in a dim room when you enter the room from the bright sunshine outside?
EASY
10th CBSE
IMPORTANT
A person walking in a dark corridor enters into a brightly lit room. State the effect on the pupil of the eye.
EASY
10th CBSE
IMPORTANT
A person walking in a dark corridor enters into a brightly lit room. How does this affect the amount of light entering the eye?
EASY
10th CBSE
IMPORTANT
Ciliary muscles of the human eye can contract or relax. How does it help in the normal functioning of the eye?
MEDIUM
10th CBSE
IMPORTANT
Describe and explain how a normal eye can see objects lying at various distances clearly.
