Chapter 8 of 14
Syllabus
Sound — Syllabus
Maharashtra Board · Class 11 · Physics
What Sound covers in Maharashtra Board Class 11 Physics: 4 topics, for the 2026-27 session. Part of the Maharashtra Board Class 11 Physics syllabus.
43 questions24 flashcards6 formulas & key relations5 concepts
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4 Topics · Maharashtra Board Class 11 Physics · 2026-27
Topics in Sound
1
Types of Waves and Their Properties
- Mechanical waves require a medium for propagation (water waves, sound waves, seismic waves)
- EM waves can propagate through vacuum (light, radio waves, X-rays)
- Matter waves are associated with moving particles (quantum mechanics)
2
Transverse and Longitudinal Waves
- Transverse waves: particles vibrate perpendicular to wave direction (water waves, EM waves)
- Longitudinal waves: particles vibrate parallel to wave direction (sound waves)
- Transverse waves have crests and troughs; longitudinal waves have compressions and rarefactions
3
Mathematical Expression of Waves
- Sinusoidal wave equation: y(x,t) = a sin(kx - ωt + φ)
- Wave traveling in +x direction: y = a sin(kx - ωt + φ)
- Wave traveling in -x direction: y = a sin(kx + ωt + φ)
4
Speed of Sound - Newton's and Laplace's Formulas
- Newton's formula: v = √(P/ρ) assuming isothermal process
- Laplace's correction: v = √(γP/ρ) considering adiabatic process
- γ = Cp/Cv = 1.41 for air (adiabatic ratio)
Key Concepts
Waves are classified into mechanical wavesKey properties includeTransverse wavesProgressive wave equationNewton proposed v = √(P/ρ)
Work through every topic in Sound with notes and quizzes
Start This ChapterFrequently Asked Questions
What are the important topics in Sound for Maharashtra Board Class 11 Physics?
Key topics in Sound include Types of Waves and Their Properties, Transverse and Longitudinal Waves, Mathematical Expression of Waves, Speed of Sound - Newton's and Laplace's Formulas. Study these first, then practise questions on each for Class 11 exams.
How should I revise Sound for Class 11 exams?
Learn the core ideas first, then work through the 43 practice questions on Sound. Revise definitions regularly and use flashcards for quick recall 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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