Which mirror is used by a dentist to focus light on the tooth of a patient?
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Solution
Mirror
Mirror produces an image of an object in front of it by reflecting light rays from the object. Plane mirrors form erect, virtual, and laterally inverted. Spherical mirrors have curved surfaces, which are formed from the surface of a sphere. there are two types of spherical mirrors based on their reflecting surface. They are:
A concave mirror is a mirror that has an inward reflecting surface. This mirror is also known as a converging mirror because if a parallel beam of light falls on this mirror after reflection rays converge to a single point called the focus. In the magnifying glass, telescopes, the concave mirrors are used.
A convex mirror is a mirror that has an outward reflecting surface. This mirror is also known as a diverging mirror because if a parallel beam of light falls on this mirror after reflection rays diverge and appear to diverge from to a single point called the focus. In the side-view mirror of vehicles, a convex mirror is used as the mirror gives a wide view of the road behind.
Explanation:
Dentists use a concave mirrorto get a magnified image of an affected tooth. In the case of the concave mirror.
When the object is placed between the focus and pole of the mirror, an image formed is erect, virtual, and magnified. Hence doctors can clearly analyze the tooth defect.
Where AB is an object and A'B' is a virtual enlarged image formed on the other side of the concave mirror.
