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A simple pendulum with a period of 2.0s has its length doubled. Its new period...

Physics
JAMB 1985
A simple pendulum with a period of 2.0s has its length doubled. Its new period is
  • A. 1.00s
  • B. 1.41s
  • C. 0.3s
  • D. 2.83s
  • E. 4.00s
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Correct Answer: Option D
Explanation
Using \(\frac{T_1}{T_2}\) = \(\sqrt\frac{L_1}{L_2}\)

\(\frac{2}{T_2}\) = \(\sqrt\frac{L_1}{2L_1}\)

T2 = 2.83sec
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