A spherical mirror has a focal length of $- 10 cm$ . What type of mirror is it likely to be?

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Convex mirror

Concave mirror

Both 1 and 2

None of these

answer is B.

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Detailed Solution

A spherical mirror has a focal length of

- 10 cm

. It is likely to be a concave mirror.
Spherical mirrors are of two types. Namely, convex and concave mirrors. The mirror is said to have a negative focal length. So, it is likely to be a concave mirror. This is due to the reason that focus is on the left-hand side of that mirror.

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