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Question

If lens I with focal length + 15 cm and lens II has focal length + 30 cm. find out which lens has more power?



A

lens I 

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B

lens II  

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C

power of lens is independent of focal length      

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Solution

The correct option is A

lens I 


(Plens|) = 115 = 0.06 D

(Plens||) = 130 = 0.033 D

(Power)lens|(Power)lens||


Physics

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