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Question
Define the following term in relation to concave mirror.
Radius of curvature
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Solution
The linear distance between the pole and the center of curvature is called the radius of curvature.
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RELATED QUESTIONS
Define the following term in the context of spherical mirrors:- Pole
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. |
Define the Focal length of a spherical mirror
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
Define the following term:
convex mirror
Complete the following diagrams shown in the following figures by drawing the reflected rays.
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
