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प्रश्न
The mirror used by a dentist to examine the teeth of a person is ______.
पर्याय
convex
concave
plane
any one of these
MCQ
रिकाम्या जागा भरा
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उत्तर
The mirror used by a dentist to examine the teeth of a person is concave.
Explanation:
A dentist uses a concave mirror because it can produce a highly magnified and erect (upright) image when an object is held very close to it. By positioning the patient’s tooth within the focal length of the mirror, the dentist gets a larger, clearer view of tiny cavities or damage. It also helps converge ambient light directly onto the tooth to improve overall visibility inside the mouth
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