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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) (v)
A plane mirror forms an image which is erect and of the same size as the object.
(b) (ii) and (vi)
A convex mirror forms a virtual, diminished, and upright image and therefore, covers a larger area of view. Its field of view is very large.
(c) (i)
A convex lens can form a magnified image of the object. Therefore, it is used as a magnifying glass.
(d) (iii)
A concave mirror forms an enlarged image of the object. Therefore, it is used to see an enlarged image of teeth by the dentist.
(e) (vi)
The image formed by a concave lens is always virtual, upright and erect.
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Mark ‘T’ if the statement is true and ‘F’ if it is false:
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. |
State the characteristics of the image formed by a plane mirror.
Find out the letters of English alphabet or any other language known to you in which the image formed in a plane mirror appears exactly like the letter itself. Discuss your findings.
What is a virtual image? Give one situation where a virtual image is formed.
State two differences between a convex and a concave lens.
Give one use each of a concave and a convex mirror.
Which type of mirror can form a real image?
Which type of lens forms always a virtual image?
A virtual image larger than the object can be produced by a
(i) concave lens
(ii) concave mirror
(iii) convex mirror
(iv) plane mirror
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