Two identical straight wires are stretched so as to produce 6 beats per second when vibrating simultaneously. On changing the tension slightly in one of them, the beats frequency remains unchanged. Denoting by $T_{1}, T_{2}$ the higher and the lower initial tensions in the strings $(T_{1} > T_{2})$ , then it could be said that while making the above changes in tension

T_{1}

was decreased or

T_{2}

was increased

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T_{1}

was increased or

T_{2}

decreased

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T_{1}

was decreased or

T_{2}

decreased

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T_{1}

was increased or

T_{2}

increased

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Solution

The correct option is A $T_{1}$ was decreased or $T_{2}$ was increased
$f_{1} - f_{2} = 6 H z$ , and $T_{1} > T_{2}$ ,

if we want to make some change in pressure to regain the beat frequency.
therefore the possible way to get is loose the tension $T_{1}$ or increase
the tension in $T_{2}$ .
option "A" is correct.

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Similar questions

Q. 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

T_{1}, T_{2}

the higher and the lower initial tension in the strings respectively, then it could be said that while making the above changes in tension

Two identical straight wires are stretched so as to produce 6 beats per second when vibrating simultaneously. On changing the tension slightly in one of them, the beat frequency remains unchanged. Denoting by $T_{1}, T_{2}$ the higher and the lower initial tension in the strings, then it could be said that while making the above changes in tension :