- Simple Harmonic Motion
- More on Simple Harmonic Motion
- Simple Pendulum
- Ball and Bowl as SHM
- Problem-Ball and Bowl as SHM

- Energies Interconversion in spring-mass system
- Problem-Energies Interconversion in Spring-Mass System
- Energy conservation in SHM
- More on Energy conservation in SHM
- Problem on Energy conservation in SHM

- Doppler Effect
- Doppler Effect: When Source at Rest, Observer is Moving
- Doppler Effect: When Observer at Rest, Source is Moving
- Doppler Effect: When both Source and Observer ae Moving
- Problem on Doppler Effect
- Applications of Doppler Effect
- More on Applications of Doppler Effect
- More on Applications of Doppler Effect

- Ultrasonic Waves
- Uses of Ultrasonic Waves
- Ultrasounds and its Applications
- Problem 1-Ultrasound and Its Applications
- Problem 2-Ultrasound and its Applications

- The Medium of Transmission
- Uses of Ultrasonic Waves
- Measuring Speed of Sound
- Ultrasounds and its Applications
- More on Measuring Speed of Sound
- Problem 1-Ultrasound and Its Applications
- Problem 1-Measuring The Speed of Sound
- Problem 2-Ultrasound and its Applications
- Problem 2-Measuring The Speed of Sound
- Effects of Various Factors on Speed of Sound in Air
- More on Effects of Various Factors on Speed of Sound in Air
- More on Effects of Various Factors on Speed of Sound in Air
- Problem on Effects of Various Factors on Speed of Sound in Air