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प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
उत्तर
Centre of curvature:-
The centre of curvature is the centre of a sphere from which the given spherical mirror (convex or concave) is obtained. It is denoted by the letter (C).
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Pole
Image formed by a convex ______ is always virtual and smaller in size.
Match the items given in Column I with one or more items of Column II.
| Column I | Column II | ||
| (a) | A plane mirror | (i) | Used as a magnifying glass. |
| (b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
| (c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
| (d) | A concave mirror | (iv) | The image is always inverted and magnified. |
| (e) | A concave lens | (v) | The image is erect and of the same size as the object. |
| (vi) | The image is erect and smaller in size than the object. |
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the nature of spherical mirror?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
State whether this spherical mirror will diverge or converge light rays.
State two uses of a concave mirror.
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 ..........................
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term:
concave mirror
