Question

The mirror used by a dental surgeon is?

• A. Plane
• B. Convex
• C. Concave
• D. B & C both

Answer 1

The correct option is C

Concave

Explanation for the correct option

1. A dental surgeon uses a concave mirror because it provides a magnified and clear image of the cavity when the cavity is between the pole and the focal length of the mirror.
2. Thus, a concave mirror is used by the dental surgeon.

Explanation for the incorrect options

For option A

1. A plane mirror doesn't magnify the object it produces an image of the same height as the object's height.
2. Thus, plane mirrors do not benefit dental surgeons.

For option B

1. The image formed by the convex mirror is always smaller than the object.
2. Thus, convex mirror is not used by dental surgeon.

For option D

1. It includes option B which is incorrect.

Hence, Option (C) is correct.