Simple harmonic oscillation: Superposition of simple harmonic motions in one dimension and in two perpendicular directions. Damped oscillations: Log-decrement of Oscillations, Heavy damping; Critical damping and Light damping. Forced oscillations: Transient and steady state behaviour and resonant oscillations. Coupled Oscillation: Modes of vibrations, normal modes co-ordinates and frequencies, degree of freedom. Waves: Reflection and Transmission of waves, Impedance matching, Waves on a string, characteristic impedance, Standing waves, Standing wave ratio, Phase and Group velocity. Longitudinal waves in gases and solids, Reflection and Transmission of sound waves, Doppler effect, Simple concept of interference of waves. Electromagnetic waves: Properties of electromagnetic waves.