Class 12 Physics Periodic motion Notes and Important Questions
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Notes for Class 12 Periodic motion (Physics) are shown above.
Practice
Important Questions
Define simple harmonic motion.
Derive an expression for the time period of oscillation for a mass $m$ attached to a vertical spring of force constant $k$.
What will be the time period of this system if it is taken inside the satellite?
A particle executes SHM. Its initial position is the mean position. The kinetic energy of a particle against time period is represented by the curve.
The displacement versus time graph of particles in SHM is shown in figure. The maximum velocity of the particle is:
1 cm s⁻¹
0.2 cm s⁻¹
3.14 cm s⁻¹
31.4 cm s⁻¹
For an oscillating object, the displacement versus time curve shown in figure. What is the velocity of the object in the mean position?
0.2π m/s
0.4π m/s
2π m/s
4π m/s
a. Show that the total energy of the particles executing SHM is constant.
b. Draw a graph showing the variation of potential energy of particle in SHM with displacement.
c. The time period of simple pendulum on the surface of earth is T. What will be its time period on the Moon's surface?
For a simple pendulum, the graph between l and T² comes out to be:
straight line
parabola
hyperbola
circular
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Exam
Past Question Analysis
Historical exam-pattern data from past NEB question papers — not a prediction of future questions.
5
Question Items
9
Total Marks
4
Papers Appeared In
| Year | Question Items | Marks |
|---|---|---|
| 2083 | 1 | 1 |
| 2082 | 2 | 6 |
| 2081 | 1 | 1 |
| 2080 | 1 | 1 |
Also appears in 4 model questions (not counted above — model sets aren't actual NEB exam history).
This chapter introduces periodic and oscillatory motion with a focus on Simple Harmonic Motion (SHM). Students learn about displacement, velocity, acceleration, energy, spring and pendulum motion, damping, forced oscillations and resonance.
This page covers Periodic motion, chapter 2 of 25 in the Class 12 Physics syllabus set by the National Examination Board (NEB). 16 important questions for this chapter are available, each with a full solution.
For numerical and derivation-based chapters like this one, working through past NEB questions is usually more useful than re-reading notes alone — try solving each important question above before checking the solution, then compare your working step by step.