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MHT CET 2026 (15 May, Shift 1) · Speed of Waves

Speed of Waves question from MHT CET 2026 (15 May, Shift 1)

Q1MHT CET 2026 · 15 MAY · SHIFT 1Easy

Speed of Waves

The speed of a wave on a string is 150150 m/s when the tension is 120120 N. The percentage increase in the tension to raise the wave speed by 20%20\% is

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Answer: (a)

  1. v=T/μ⇒T∝v2v = \sqrt{T/\mu} \Rightarrow T \propto v^2
  2. T′/T=(1.2)2=1.44T'/T = (1.2)^2 = 1.44
  3. So the answer is (a) 44%44\%.
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