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MHT CET Physics question

PhysicsWavesMHT CET

When tension is applied to a sonometer wire of length , it vibrates with the fundamental frequency . Keeping the experimental set-up same, when the tension is increased by 8 N, the fundamental frequency becomes three times the earlier fundamental frequency . The initial tension applied to the wire (in newton) was [MHTCET 2020]

Answer: (D)

Solution

, so $=3⇒ T+8=9T⇒

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Question ID VK-070358