Wave Motion 4 Question 18
17. Two identical straight wires are stretched so as to produce 6 beats/s when vibrating simultaneously. On changing the tension slightly in one of them, the beat frequency remains unchanged. Denoting by
(1991, 2M)
(a)
(b)
(c)
(d)
Numerical Value
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Answer:
Correct Answer: 17. (b)
Solution:
or
and
Now, if
If
Similarly, when
