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The focal lengths of a converging lens m...

The focal lengths of a converging lens measured for violet, green and red colours of `fv'f_(G)'f_(R)` respectively. We will find

A

`f_(G)gtf_(R)`

B

`f_(v)ltf_(R)`

C

`f_(V)gtf_()R`

D

`f_(V)=f_(R)`

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The correct Answer is:
B
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