JEE Main 2017PhysicsOscillationsMediumMCQ

JEE Main 2017 — Oscillations Question with Solution

JEE Main 2017 (09 Apr Online)

Question

In an experiment to determine the period of a simple pendulum of length 1 m, it is attached to different spherical bobs of radii r1 and r2 . The two spherical bobs have uniform mass distribution. If the relative difference in the periods, is found to be 5×10-4 s, the difference in radii, r1-r2 is best-given by

Choose an option

Show full solutionCorrect option: B
Correct answer
B0.05 cm

Step-by-step explanation

T=2π lg

T∝l

l=1

ΔTT=12 Δll 

Δl=r1-r2⇒ ∆l=2∆TT×l

=2×5×10-42×1 m

= 5×10-2 cm

=0.05 cm  

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About this question

This is a previous-year question from JEE Main 2017, 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.