Advertisements
Advertisements
प्रश्न
Which of the following changes occur when you walk out of bright sunshine into a poorly lit room?
(a) the pupil becomes larger
(b) the lens becomes thicker
(c) the ciliary muscle relaxes
(d) the pupil becomes smaller
उत्तर
the pupil becomes larger
The pupil becomes larger when you walk out of bright sunshine into a poorly lit room, to allow more light to enter the eye.
APPEARS IN
संबंधित प्रश्न
Name the part of the eye:
which changes the focal length of eye-lens.
What job does the pupil of the eye do?
After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:
Left eye : + 2.00 D
Right eye : + 2.25 D
The child is suffering from the defect of vision called:
(a) short-sightedness
(b) long-sightedness
(c) cataract
(d) presbyopia
Explain clearly why, a person who has lost the sight of one eye is at a disadvantage compared with the normal person who has two good eyes.
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?
With reference to the functioning of the eye, answer the question that follow:
Name the cells of the retina and its respective pigments which get activated in the light.
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The part of the eye which can be donated from a clinically dead person is the Retina.
Sketch and label V.S. of a human eye.
Name the following:
The most sensitive region of the retina.
Give Technical Term:
The adjustment of the eye in order to obtain a clear vision of objects at different distances
