Question on: JAMB Physics - 2007
The fundamental frequency of a plucked wire under a tension of 400N is 250Hz. When the frequency is changed to 500 Hz at constant length, the tension is
A
1600N
B
400N
C
160N
D
40N
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Correct Option: A
The fundamental frequency is related to tension as
F ∝ √T
| => | F | = K |
| √T |
| ∴ | F1 | = | F2 | => | 250 | = | 500 |
| √T1 | √T2 | √400 | √T2 |
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