Give some examples that have both periodic motion and simple harmonic motion.

Some of the familiar periodic motions are a vibrating tuning fork, the Earth revolving around the Sun, a swing in motion, a water wave, and a working pendulum. Simple harmonic motion is a distinct instance of periodic motion. A water wave, the swing and the tuning fork perform simple harmonic motions. On the other hand, the revolution of the Earth and the bouncing ball do not follow the principles of harmonic motion.

Which type of wave propaates in liquid? Explain . 

The type of wave that propagates in a liquid is called a mechanical wave. Mechanical waves are waves that require a medium to propagate, meaning they need a substance to travel through. In the case of liquid, such as water, mechanical waves can travel through it.

There are two primary types of mechanical waves that can propagate in a liquid: transverse waves and longitudinal waves.

1. Transverse Waves: In a transverse wave, the particles of the medium move perpendicular to the direction of wave...

Are Electron Waves or Particles ?

A question comes to our mind "Is the electron really a particle or is it a wave?" and "What does it look like?" Up-to the year 1924, the electron was exclusively regarded as a particle. However, in 1924, de-Broglie suggested that the electron behaves both as a material particle and as a wave. Just like light, some experimental facts can be explained by assuming electrons as tiny particles while some other facts can be explained only on the basis of wave character of the electrons. Thus the...