JEE Physics · Hard

Simple Harmonic Motion: PE Variation MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow
PE VariationHardQuestion 31132

Question

Frequency of variation of PE with time in SHM of frequency f is:
  1. A
    f/2
  2. B
    f
  3. C
    2f
    Correct
  4. D
    4f

Correct answer

2f

Explanation

PE ∝ sin²(ωt) = (1 − cos2ωt)/2. Frequency of PE variation is 2f (twice the SHM frequency).