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Question
Name the part of the eye:
which changes the focal length of eye-lens.
Solution
The ciliary muscles change the focal length of the eye lens.
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RELATED QUESTIONS
Differentiate between: Rods and cones
The optical prescription for a pair of spectacles is :
Right eye : −3.50 D
Left eye : −4.00 D
Which lens has a greater focal length?
Fill in the following blank with suitable word:
The part of eye which alters the size of the pupil is............
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
Differentiate between members of the following pair with reference to what is asked in bracket.
Rod and cone cells (pigment contained)
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.
Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them?
Match the following:
| Column - I | Column - II | ||
| 1 | Retina | a | pathway of light |
| 2 | Pupil | b |
far point comes closer |
| 3 | Ciliary muscles | c |
near point moves away |
| 4 | Myopia | d | screen of the eye |
| 5 | Hypermetropia | e | power of accommodation |
State the functions of the following:
Iris
Name the following:
Kind of retinal cells sensitive to dim light.
