Question

A second harmonic has to be generated in a string of length l stretched between two rigid supports. The points where the string has t( be plucked and touched are (K-2001)

• A. Plucked l/4 and touched at 3l/4
• B. Plucked l/4 and touched at l/2
• C. Plucked l/2 and touched at 3l/4
• D. Plucked l/2 and touched at l/4

Answer 1

Answer: (B)

Plucked l/4 and touched at l/2

Answer 2

$\frac{l}{4}$ and $\frac{l}{2}$ respectively