Question
Two identical piano wires kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to occurrence of 6 beats/s when both the wires oscillate together would be
-
0.02
-
0.03
-
0.04
-
0.01
Solution
A.
0.02
According to law of tension, the frequency of the string varies directly as the square root of its tension
