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The focal length of a spherical mirror is 20 cm. The radius of curvature of this mirror will be |
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(a) |
10 cm |
(b) |
20 cm |
(c) |
40 cm |
(d) |
80 cm |
|
The focal length of a spherical mirror is 20 cm. The radius of curvature of this mirror will be |
|||||||
|
(a) |
10 cm |
(b) |
20 cm |
(c) |
40 cm |
(d) |
80 cm |