RAY OPTICS

dispersion by a prism

 refraction of light

SHM of a loaded spring : VEDIO

VEDIO OF THE GRAPHICAL REPRESENTATION OF POSITION, VELOCITY AND ACCELERATION OF A PARTICLE UNDER SHM

OSCILLATIONS: Simple Pendulum

oscillations of a simple pendulum

graphical representation

DOPPLER EFFECT

What is the simplest way to observe the optical Doppler effect? 

answer:

Go out at and look at cars. The lights of the ones approaching you are white, while the lights of the ones moving away from you are red.