1. $$2\pi \sqrt {\frac{g}{\delta }} $$
  2. $$\frac{1}{{2\pi }}\sqrt {\frac{g}{\delta }} $$
  3. $$2\pi \sqrt {\frac{\delta }{g}} $$
  4. $$\frac{1}{{2\pi }}\sqrt {\frac{\delta }{g}} $$
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1 Answers

Answer: Option 2

Let'

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