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Oscillations

Maharashtra Board · Class 12 · Physics

Quick revision notes for Oscillations — Maharashtra Board Class 12 Physics. Key concepts, formulas, and definitions for last-minute revision.

44 questions22 flashcards5 concepts

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Key Topics to Revise

1

Periodic and Oscillatory Motion

  • Periodic motion repeats itself after a definite time interval called period (T)
  • Oscillatory motion is a special case of periodic motion where the body moves to and fro about a mean position
  • All oscillatory motions are periodic, but not all periodic motions are oscillatory
2

Simple Harmonic Motion (SHM)

  • SHM is the simplest form of oscillatory motion where acceleration is proportional to displacement and directed towards mean position
  • Restoring force: F = -kx (always directed towards equilibrium)
  • Acceleration: a = -ω²x (proportional to displacement, opposite in direction)
3

Energy in Simple Harmonic Motion

  • Total energy in SHM remains constant (energy conservation)
  • Kinetic energy: KE = ½mv² = ½mω²(A² - x²)
  • Potential energy: PE = ½kx² = ½mω²x²
4

Simple Pendulum

  • Simple pendulum performs SHM for small angular displacements (θ < 10°)
  • Restoring force: F = -mg sin θ ≈ -mgθ (for small θ)
  • Time period: T = 2π√(L/g) - independent of mass and amplitude

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Full Notes

Key Concepts

Linear periodic motion where accelerationd²x/dt² + ω²x = 0Total energy E = KE +Heavy bob suspended by massless stringRotational oscillations where restoring torque τ

Frequently Asked Questions

What are the important topics in Oscillations for Maharashtra Board Class 12 Physics?
Oscillations covers several key topics that are frequently asked in Maharashtra Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Oscillations — Maharashtra Board Class 12 Physics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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