For which colour of light the focal lenght of a lens will be maximum?

(a) Violet
(b) Blue
(c) Red
(d) Yellow

Anurag Mishra Professor Asked on 3rd February 2016 in Science.
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  • 1 Answer(s)

    Answer:  (c) Red 

    Anurag Mishra Professor Answered on 6th February 2016.
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