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MHT CET 2024 (9 May, Shift 2) · Speed of Waves

Speed of Waves question from MHT CET 2024 (9 May, Shift 2)

Q13MHT CET 2024 · 9 MAY · SHIFT 2Easy

Speed of Waves

A string of mass 0.2 Kg is under a tension of 2.5 N. The length of the string is 2 m. A transverse wave starts from one end of the string. The time taken by the wave to reach the other end is

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Answer: (b)

  1. μ=0.2/2=0.1 kg/m\mu = 0.2/2 = 0.1\ \text{kg/m}
  2. v=T/μ=2.5/0.1=5 m/sv = \sqrt{T/\mu} = \sqrt{2.5/0.1} = 5\ \text{m/s}
  3. t=L/v=2/5=0.4 st = L/v = 2/5 = 0.4\ \text{s}
  4. So the answer is (b) 0.40.4 s.
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