JEE Mains · Physics · STD 11 - 13. oscillations
A simple pendulum oscillating in air has period \(T.\) The bob of the pendulum is completely immersed in a non-viscous liquid. The density of the liquid is \(\frac {1}{16}\) of the material of the bob. If the bob is inside liquid all the time, its period of oscillation in this liquid is
- A \(2T\sqrt {\frac {1}{10}}\)
- B \(2T\sqrt {\frac {1}{14}}\)
- C \(4T\sqrt {\frac {1}{15}}\)
- D \(4T\sqrt {\frac {1}{14}}\)
Answer & Solution
Correct Answer
(C) \(4T\sqrt {\frac {1}{15}}\)
Step-by-step Solution
Detailed explanation
For a simple pendulum \(\mathrm{T}=2 \pi \sqrt{\frac{\mathrm{L}}{\mathrm{g}_{\mathrm{err}}}}\) Situation \(1\): when pendulum is in air \(\rightarrow g_{\text {eff }}=g\) Situation \(2\) :when pendulum is in liquid…
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