Question

Name the mirror which can give
(a) an erect and enlarged image of an object.
(b) an erect and diminished image of an object.

Answer 1

Answer:

(a) The mirror which can give an “erect and enlarged image” of an object is a concave mirror.

This can be achieved by holding the object between the “pole and the principle focus” of the mirror.

A concave mirror is a mirror that is curved inwards at the center. The image is a real image.

(b) The mirror which can give an “erect and diminished image” of an object is a convex mirror.

A convex mirror is the mirror with a bulging reflective surface.

A convex mirror produces a virtual image and erect image but diminished in size.

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Answer 2

(a) Concave mirror gives an erect and enlarged image of an object.

(b) Convex mirror gives an erect and diminished image of an object .

Explanation:

• When an object is placed very close to the concave mirror, a virtual and magnified image is formed.
• When the distance between the mirror and the object is increased, the image’s size gets reduced. Then, an erect and enlarged image is formed.
• Whatever the position of the object is, the image formed by the convex mirror is always diminished and erect.
• When the object is kept at infinity, at the focus, a virtual image is produced.
• When it is placed between the pole and infinity, diminished image is produced, which is also virtual and erect.