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Q.

If two similar springs each of spring constant K1 are joined in series, the new spring constant and time period would be changed by a factor:

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a

12,2

b

12,22

c

14,2

d

14,22

answer is A.

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Detailed Solution

Springs are in series, 1Ks=1K1+1K1⇒Ks=K12 Time Period =T1=2πmKS=2πm2K1=2T i.e. Ks=12K1& T1=2T
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