The tension of a stretched string is increased by 69%. In order to kee – McqOptions

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1.	The tension of a stretched string is increased by 69%. In order to keep its frequency of vibration constant, its length must be increased by [KCET 2002]
A.	20%
B.	30%
C.	\[\sqrt{69}%\]
D.	69%
Answer» C. \[\sqrt{69}%\]

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