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प्रश्न
Part of the eye which controls the light entering is called
विकल्प
iris
cornea
lens
retina
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उत्तर
iris
Explanation:
Iris is a dark muscular structure behind the cornea, which controls the amount of light entering into the eye.
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संबंधित प्रश्न
The following diagram shows a point object O placed in front of a plane mirror. Take two rays from the point O and show how the image of O is formed and seen by the eye.
Explain the following term:
Reflected ray. Draw diagram/diagrams to show them.
A boy is standing in front of a plane mirror at a distance of 3 m from it.
(i) What is the distance between the boy and his image?
(ii) If the boy moves 1 m backward, find the distance between the image and the boy.
State whether the following statement is true or false. If false, correct it.
The image formed in a plane mirror is the real, erect, and same size as that of the object.
Define the term Principle axis.
In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
Which of the following ray diagrams is correct for the ray of light incident on a lens shown in figure?
 |
 |
| A | B |
 |
 |
| C | D |
Select the WRONG statement in case of image formed by a plane mirror.
