MHT CET 2022 Physics question
When tension 'T' is applied to a sonometer wire of length '' it vibrates with the fundamental frequency 'n'. Keeping the setup same, when the tension is increased by 8N, the fundamental frequency becomes three times the earlier. The initial tension applied to the wire was
Answer: (B)
Solution
Fundamental frequency of a stretched wire: , so for fixed length and wire. With : . But , so $9T = T + 8
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