Advertisements
Advertisements
प्रश्न
Part of the eye which controls the light entering is called
विकल्प
iris
cornea
lens
retina
Advertisements
उत्तर
iris
Explanation:
Iris is a dark muscular structure behind the cornea, which controls the amount of light entering into the eye.
APPEARS IN
संबंधित प्रश्न
You are standing at a distance of 2 meters from a plane mirror.
What is the distance between you and your image?
The reflection of light from a wooden surface is _________ reflection.
If the angle between the plane mirror and the incident ray is 40∘, what are the angles of incidence and reflection?
The diagram in Figure shows a point object P in front of a plane mirror MM1.
(a) Complete the diagram by taking two rays from the point P to show the formation of its image.
(b) In the diagram, mark the position of eye to see the image.
(c) Is the image formed real or virtual? Explain why?
Write down four characteristics of image formed in a plane mirror.
The word PLATE written on a paper is held in front of a plane mirror. Write down the letters as seen in the following case.
The paper is held perpendicular to the mirror.
By geometrical construction, find the position of the image in the following figure.
Plane mirrors are used as looking glass, to reflect light on objects and in periscopes.
Match the following:
| 1. | Rubber | a. | Erect |
| 2. | Greased paper | b. | Inverted |
| 3. | Real image | c. | Opaque medium |
| 4. | Virtual image | d. | Translucent medium |
