The focal length of a concave mirror in air is f. If it is immersed in water , then the focal length will be |
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(a) |
f |
(b) |
(c) |
f |
(d) |
The focal length of a concave mirror in air is f. If it is immersed in water , then the focal length will be |
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(a) |
f |
(b) |
(c) |
f |
(d) |