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Focal length of convex lens will miximum...

Focal length of convex lens will miximum for

A

blue light

B

yellow light

C

green light

D

red light

Text Solution

Verified by Experts

The correct Answer is:
D
Hence,`delta_(V)gtdelata_(R)`

Violet ray deviates maximum. Its focal length is minimum. Red ray deviates least. Its focal length is largest.
`f_(R)gtf_(Y)gtf_(G)gtf_(B)gtf_(V)`
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