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Saturday, 31 October

JEE Main 2021 · PhysicsMultiple choiceOtherEasyConceptual

JEE Main 31 August 2021, Shift 2, Physics Q12

Question 12 of 90 in this shift, Physics question 12 of 30, Section A.

For a body executing S.H.M. : (a) Potential energy is always equal to its K.E. (b) Average potential and kinetic energy over any given time interval are always equal. (c) Sum of the kinetic and potential energy at any point of time is constant. (d) Average K.E. in one time period is equal to average potential energy in one time period. Choose the most appropriate option from the options given below :
  1. (1)only (b)
  2. (2)(b) and (c)
  3. (3)only (c)
  4. (4)(c) and (d)Official answer

Official answer

Option 4

NTA final key.

Chapter
Oscillations
Topic
Energy in SHM
Idea tested
Average Energy Values

Same topic in other shifts

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.