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A second harmonic has to be generated in...

A second harmonic has to be generated in a string of length l stretched between two rigid supports. The point where the string has to be plucked and touched are

A

Plucked at `(l)/(4)` and touch at `(l)/(2)`

B

Plucked at `(l)/(4)` and touch at `(3l)/(4)`

C

Plucked at `(l)/(2)` and touched at `(l)/(4)`

D

Plucked at `(l)/(2)` and touched at `(3l)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
Plucking distance
from one end `=(1)/(2n)=(1)/(4)`

and touch distance `=(l)/(2)`.
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