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Two springs of force constants `k_(1)` and `k_(2)`, are connected to a mass m as shown. The frequency of oscillation of the mass is `f`. If both `k_(1)` and `k_(2)` are made four times their original values, the frequency of oscillation becomes

A

`f//2`

B

`f//4`

C

`4f`

D

2f

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The correct Answer is:
D
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