Question

Which type of mirror is used by dentists to examine teeth?

Hint:

Concave mirrors are used for magnification when the object is close, while convex mirrors are used for a wider field of view (like in rear-view mirrors).

Answer 1

Step 1: Understanding the Concept:
Dentists need a magnified view of the teeth to detect cavities or other issues clearly.

Step 2: Detailed Explanation:
When an object (like a tooth) is placed close to a concave mirror (between its pole and principal focus), the mirror forms an erect, virtual, and magnified image.
This magnification helps the dentist see the tooth in greater detail.

Step 3: Final Answer:
A concave mirror is used.