JEE Main 2013 — Oscillations Question with Solution
JEE Main 2013 (23 Apr Online)
Question
Bob of a simple pendulum of length is made of iron. The pendulum is oscillating over a horizontal coil carrying direct current. If the time period of the pendulum is then :
Choose an option
Show full solutionCorrect option: D
Correct answer
D and damping is larger than in air alone.
Step-by-step explanation
When the pendulum is oscillating over a current carrying coil, and when the direction of oscillating pendulum bob is opposite to the direction of current. Its instantaneous acceleration increases.
Hence time period and damping is larger than in air alone due energy dissipation.
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This is a previous-year question from JEE Main 2013, covering the Oscillations chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.