Published by:
CGP EDU Academic Team
Published on: September 12, 2026
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 $\frac{1}{4}$ and touch at $\frac{1}{2}$ (b) Plucked at $\frac{1}{4}$ and touch at $\frac{3}{4}$ (c) Plucked at $\frac{1}{2}$ and touched at $\frac{1}{4}$ (d) Plucked at $\frac{1}{2}$ and touched at $\frac{3}{4}$
Text Solution
Verified by ExpertsThe correct answer is:
A
Second harmonic means 2 loops in a total length
Hence plucking distance from one end $= \frac{1}{2p} = \frac{1}{2 \times 2} = \frac{1}{4} .$
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