Question

What is a spherical mirror? How can you identify that the mirror is concave?​

Answer 1

Answer:

(a) A spherical mirror is a mirror which has the shape of a piece cut out of a spherical surface. There are two types of spherical mirrors: concave, and convex.

(b) Difference between concave and convex mirrors:

i) In a concave mirror the reflecting surface is in the inner part of the sphere of which the mirror is a part. Whereas in convex mirror the reflecting surface is at the outer side of the sphere of which the mirror is a part.

ii) In a concave mirror the image formed can be either real and inverted or virtual and erect, but in a convex mirror always the image formed is virtual and erect.

iii) The magnification of a concave mirror can be either greater, equal or less than one. But in a convex mirror, the magnification is always less than one.

Answer 2

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What is a spherical mirror? How can you identify that the mirror is concave?

• A spherical mirror is that mirror whose reflecting surface is a part of a hollow sphere of glass. In a concave mirror, the reflecting surface is the bent-in surface.

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