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प्रश्न
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संबंधित प्रश्न
A simple microscope is used by watch repairers. Give reason.
Define the following term in the context of spherical mirrors:- Principal focus
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. |
A virtual image larger than the object can be produced by a ______.
What do you mean by the term dispersion?
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
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.
