• Introduction to the concept of waves.
• Transverse and longitudinal waves.
• Displacement relation in a progressive wave.
• The speed of a travelling wave.
• The principle of superposition of waves.
• Reflection of waves.
• Beats.
• Introduction to the term oscillations
• Periodic and oscillatory motions
• Simple harmonic motion
• Simple harmonic motion and uniform circular motion
• Velocity and acceleration in simple harmonic motion
• Force law for simple harmonic motion
• Energy in simple harmonic motion
• Some systems executing SHM
• Damped simple harmonic motion
• Forced oscillations and resonance

Doppler effect