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Q.

Two sprin8s, of force constants k1, and k2, are connected to a mass m as shown. The frequency of oscillation of the mass is f. If both k1 and k2, are madefour times their original values, the frequency of oscillation becomes

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a

4f

b

2f

c

f/2

d

f/4

answer is B.

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Detailed Solution

We know thatω2=k1+k2m âˆ´ 4π2f2=k1+k2m f=12πk1+k2 m as k1 and k2 are increased four times, hence frequency becomes two times.
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