Question

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 $\frac{L}{4}$ and touch at $\frac{L}{2}$
• B. Plucked at $\frac{L}{4}$ and touch at $\frac{3L}{2}$
• C. Plucked at $\frac{L}{2}$ and touch at $\frac{L}{2}$
• D. Plucked at $\frac{L}{2}$and touch at $\frac{3L}{2}$

Answer 1

Answer: (A)

Plucked at $\frac{L}{4}$ and touch at $\frac{L}{2}$

Answer 2

The plucking point of the string will be antinode and touching point will be node.