Advertisements
Advertisements
प्रश्न
Match the following:
| Column - I | Column - II | ||
| 1 | Retina | a | Path way 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 |
Advertisements
उत्तर
| Column - I | Column - II | ||
| 1 | Retina | d | Screen of the eye |
| 2 | Pupil | a | Pathway of light |
| 3 | Ciliary muscles | e | Power of accommodation |
| 4 | Myopia | b | Far point comes closer |
| 5 | Hypermetropia | c | Near point moves away |
APPEARS IN
संबंधित प्रश्न
How unit of power related to focal length of a lens?
The lens mentioned in 6(b) above is of focal length 25cm. Calculate the power of the lens.
What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see:
(a) the electric bulb
(b) a piece of white paper
An object of height 4 cm is placed at a distance of 15 cm in front of a concave lens of power, −10 dioptres. Find the size of the image.
On reducing the focal length of a lens, its power ______.
A normal eye is not able to see objects closer than 25 cm because
Which lens has more power a thick lens or a thin lens?
A convex lens is of focal length 20 cm. Find its power.
The same size images are formed by a convex lens when the object is placed at 20 cm or at 10 cm from the lens. The focal length of convex lens is ______ cm.
