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Light
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If f
b
and f
g
are the focal lengths of a convex lens for blue and red lights respectively and f
b
and f
r
are the respective value for a concave lens, then
f
b
> f
r
and f
b
> f
r
f
b
< f
r
and f
b
< f
r
f
b
> f
r
and f
b
< f
r
None of these
Correct Option:
B
N/A
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