A) plucked at\[\frac{l}{4}\]and touch at\[\frac{l}{2}\]
B) plucked at\[\frac{l}{4}\]and touch at \[\frac{3l}{4}\]
C) plucked at\[\frac{l}{2}\] and touched at \[\frac{l}{4}\]
D) plucked at\[\frac{l}{2}\]and touched at\[\frac{3l}{4}\]
Correct Answer: A
Solution :
If the second harmonic or first overtone has to be generated in a string of length\[l\]stretched between to rigid supports. Then the points where the string has to be plucked is \[\frac{l}{4}\] and touched at \[\frac{l}{2}\]
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