Wave Motion 2 Question 30
30. A horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, .
Assuming
(2012)
(a) the number of nodes is 5
(b) the length of the string is
(c) the maximum displacement of the mid-point of the string from its equilibrium position is
(d) the fundamental frequency is
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Answer:
Correct Answer: 30. (b, c)
Solution:
Number of nodes
From the given equation, we can see that
The mid-point of the string is
But this is fifth harmonic frequency.