In Melde's experiment, the string vibrates in 7 segments under tension of 9 gm-wt. If the string is to be vibrated in 3 segments, then the tension required will be
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a
49 gm-wt
b
63 gm-wt
c
61 gm-wt
d
14gm-wt
answer is A.
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Detailed Solution
Tâ1/p2 â´ T2T1=p1p22 or T2=T1p1/p22 or T2=9Ã(7/3)2=49gmâwt