Question

In the table below, column I lists various mirrors and lenses and column II their uses, qualities or properties.

column I	Column II
I. Plane mirror	A. Feels thinner in the middle.
II. Concave mirror	B. Always forms virtual image.
III. Convex mirror	C. Always forms virtual image of smaller size.
IV. Concave lens	D. Is used by dentists to examine teeth.
V. Convex lens	E. Can be used as reading glass.

The correct matching is:

• A. I-B, II-,D, III-C, IV-A, V-E.
• B. I-C, II-A, III-E, IV-B, V-D.
• C. I-A, II-E, III-B, IV-D, V-C.
• D. I-A, II-C, III-E, IV-B, V-D.

Answer 1

Answer: (A)

I-B, II-,D, III-C, IV-A, V-E.

Plane mirror always forms virtual image as we cannot take it on screen and of the same size as that of the object.
Concave mirror forms enlarge image of the object hence dentists used it to see the cavity.
Convex mirror always forms virtual image of smaller size.
Concave lens feels thinner in the middle.
Convex lens Can be used as reading glass. Hence correct option is A.