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K = 20N/m, if elongation is same then fr...

K = 20N/m, if elongation is same then frequency ?

A

`2 pi sqrt(m/k)`

B

`2 pi sqrt((2m)/k)`

C

`2 pi sqrt((4m)/(5k))`

D

none

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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