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प्रश्न
Answer the following question:
Distinguish between the convex mirror and the concave mirror.
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उत्तर
Convex mirror and concave mirror.
| Convex mirror | Concave mirror | |
| 1. | It is called a diverging mirror. | It is called a converging mirror. |
| 2. | The light is reflected from the outer surface. | The light is reflected from the inner surface. |
| 3. | It can form only a virtual image | It can form a real image as well as a virtual image. |
| 4. | According to sign convention, the focal length is positive. | According to sign convention, the focal length is negative. |
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal axis
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
Does the mirror mentioned in part (b) form real image for all locations of the object?
Name the kind of mirror used to obtain :
A real and enlarged image
Name the kind of mirror used to obtain:
A virtual and enlarged image
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Define the following term in relation to concave mirror.
Principal axis
Is real image always inverted?
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
The diagram below shows the parallel rays incident on a convex mirror. C is the centre of the curvature of the mirror. By drawing the paths of the reflected rays, label the focus F and hence find the focal length of the mirror.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Define focal length.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
In the figure shown, the image of a real object is formed at the point I. AB is the principal axis of the mirror. The mirror must be:
