CBSE 11 Physics · U10
Oscillations and Waves
CBSE Class 11 Physics Unit X: periodic motion, SHM, phase, loaded spring oscillations, SHM energy, simple pendulum time period, travelling waves, progressive waves, superposition, reflection, standing waves in strings and organ pipes, harmonics, and beats.
Test yourself
A focused, distraction-free run through 40 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 10.1
Periodic Motion, SHM and Phase
Time period, frequency, displacement as a function of time, periodic functions, SHM as projection of uniform circular motion, and phase.
Topic 10.2
Spring Oscillations, Pendulum and SHM Energy
Loaded spring, restoring force and force constant, energy exchange in SHM, and simple pendulum time period.
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Topic 10.3
Travelling Waves and Progressive Wave Relation
Transverse and longitudinal waves, speed of a travelling wave, displacement relation for a progressive wave, wavelength, frequency and phase difference.
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Topic 10.4
Superposition, Reflection and Standing Waves
Principle of superposition, reflection at boundaries, standing waves in strings and organ pipes, nodes, antinodes and harmonics.
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Topic 10.5
Harmonics and Beats
Fundamental modes and harmonics of strings and organ pipes, overtones, beat frequency, beat period and nearby-frequency applications.
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