Which of the following mirror is used by a dentist to examine a small cavity in a patient’s teeth?

Q.) Which of the following mirror is used by
a dentist to examine a small cavity in a
patient’s teeth?

(a) Convex mirror

(b) Plane mirror

(c) Concave mirror

(d) Any spherical mirror

Ans. (c) Concave mirror

Explanation: Concave mirrors concentrates parallel rays of light on its focus and are therefore used by dentists to examine small cavities in patient’s teeth.

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