First slide

Spherical/Curved mirrors

Question

In case of spherical mirrors:

Moderate

A

Chromatic aberration is absent
B

Spherical aberration is absent
C

Both are absent
D

Both are maximum

Solution

Focal length of a mirror is $f = \frac{R}{2}$
Focal length depends only on radius of curvature and independent of colour of light. Hence chromatic aberration is absent.

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