Learn

Saturday, 31 October

JEE Main · Physics · Oscillations

Phase and Initial Conditions

JEE Main asked Phase and Initial Conditions 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2022 and 2023. It belongs to SHM Equations, in Oscillations (Physics). The longest wait between two years asking it was 1 year. In 2021 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2021
last in 2023
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.050.10’170’200.07’210.03’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20231 of 12
  • 20221 of 24
  • 20212 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: application.

  • Initial phase of shm from position and direction
  • Time period from time to reach half amplitude

Difficulty

Easy 2Medium 2Hard 0

Every question was multiple choice.

Every question

All 4 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 10 Apr 2023, Shift 1 · Q31A particle executes S.H.M. of amplitude A along xx-axis. At t=0t = 0, the position of the particle is x=A2x = \frac{A}{2} and it moves along…EasySingle correct
  2. 27 Jun 2022, Shift 1 · Q45The displacement of simple harmonic oscillator after 3 seconds starting from its mean position is equal to half of its amplitude. The time…EasySingle correct
  3. 22 Jul 2021, Shift 2 · Q9The motion of a mass on a spring, with spring constant K is as shown in figure. The equation of motion is given by…MediumSingle correctHas a figure
  4. 25 Feb 2021, Shift 2 · Q8Y=Asin⁡(ωt+ϕ0)Y = A\sin(\omega t + \phi_0) is the time-displacement equation of a SHM. At t=0t = 0 the displacement of the particle is…MediumSingle correct

Shifts: 25 Feb 2021, Shift 2, 22 Jul 2021, Shift 2, 27 Jun 2022, Shift 1, 10 Apr 2023, Shift 1.

Same topic

Other ideas in SHM Equations

SHM Equations has 21 ideas JEE Main has asked; 12 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas