When tension ' T ' is applied to a sonometer wire of length ' l ' it vibrates with the fundamental frequency ' n '. Keeping the setup same, when the tension is increased by 8 ~N , the fundamental frequency becomes three times the earlier. T

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When tension ' T ' is applied to a sonometer wire of length ' l ' it vibrates with the fundamental frequency ' n '. Keeping the setup same, when the tension is increased by 8 ~N , the fundamental frequency becomes three times the earlier. The initial tension applied to the wire was

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Correct answer: B. 0.5 ~N

The initial fundamental frequency of wire can be written as, On dividing equation ( 2 ) by equation (1), we get aligned & 3= T+8 N T & 9 T=T+8 N & T=1 N aligned

When tension ' T ' is applied to a sonometer wire of length ' l ' it vibrates with the fundamental frequency ' n '. Keeping the setup same, when the tension is increased by 8 ~N , the fundamental frequency becomes three times the earlier. The initial tension applied to the wire was

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