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Two springs have spring constants k(1)an...

Two springs have spring constants `k_(1)and k_(2) (k_(1)nek_(2)).` Both are extended by same force. If their elastic potential energical are `U_(1)and U_(2),` then `U_(2)` is

A

`(K_(1))/(K_(2))`

B

`(K_(2))/(K_(1))`

C

`sqrt((K_(1))/(K_(2)))`

D

`sqrt((K_(2))/(K_(2)))`

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The correct Answer is:
B
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