What is the function of Concave Mirror ?

Academic Physics NCERT Class 7

A concave mirror, or converging mirror, has a reflecting surface that is curved inward in the middle. Concave mirrors reflect light inward to one focal point. They are used to focus light.

The examples of concave mirrors are the mirrors used in automobile headlights, reflecting telescopes, torch lights, etc

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Updated on: 10-Oct-2022

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What is Concave Mirror?
What is the difference between Concave Mirror and Convex Mirror?
What is a convex and concave mirror?
Out of convex mirror and concave mirror, whose focus is situated behind the mirror?
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Concave Convex Mirror
The magnification produced by a spherical mirror and a spherical lens is + 0.8.(a) The mirror and lens are both convex (b) The mirror and lens are both concave(c) The mirror is concave but the lens is convex (d) The mirror is convex but the lens is concave
The magnification produced by a spherical lens and a spherical mirror is + 2.0.(a) The lens and mirror are both concave (b) The lens and mirror are both convex(c) The lens is convex but the mirror is concave (d) The lens is concave but the mirror is convex
You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either$(a)$. concave mirror or convex mirror.$(b)$. concave mirror or convex lens.$(c)$. concave mirror or concave lens.$(d)$. concave lens or convex lens.
Define the principal focus of a concave mirror.
According to New Cartesian Sign Convention:(a) focal length of concave mirror is positive and that of convex mirror is negative(b) focal length of both concave and convex mirrors is positive(c) focal length of both concave and convex mirrors is negative(d) focal length of concave mirror is negative and that of convex mirror is positive
A spherical mirror and a spherical lens each have a focal length of, –15 cm. The mirror and the lens are likely to be:(a) both concave.(b) both convex.(c) the mirror is concave but the lens is convex.(d) the mirror is convex but the lens is concave.
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.

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