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Question
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
Solution
Since the outer surface is shiny, it will form a convex mirror.
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RELATED QUESTIONS
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
We can obtain an enlarged and erect image by a convex mirror.
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. |
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
Define the following term:
spherical mirror
Define the term Aperture.
What is the relationship between the focal length and radius of curvature?
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
