1. Tardigrade
  2. Question
  3. Physics
  4. A second harmonic has to be generated in a string of length l stretched between two rigid supports. The points where the string has to be plucked and touched are respectively

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

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

Waves

Solution:

In the $2^{nd}$ harmonic the shape of wave looks like.
image
The point of touching forms a node point of plucking forms an antinode. Hence, for $2^{\text {nd }}$ harmonic, we need to need wire touched at $\frac{l}{2}$ and pluck it at $\frac{l}{4}$.