DYNAMICS VS KINEMATICS

Mechanics

It is the branch of physics which deals with the motion of  an object.There are two kinds which are as under.

Kinematics

It is the branch of physics which deals with the study of motion without knowing the cause of motion.

Now what is motion? If a body changes its position with respect to sorrounding than the body is said to be in motion eg translational motion,vibrational motion and oscillatory motion.

Dynamics:

It is the branch of physics which deals with the cause of motion.It means we usually know about the reasons of motions.

SPECTRUM

Light is a form of energy and its velocity is 3.0*10^8 meter per second. It is in the form of photons and travel from one place to another in the form of corpuscles according to newton corpuscular theory of light.

DISPERSION OF LIGHT

Splitting or scattering of white light through prism into different colours are called dispersion of light.as we know that white light is the combination of different colours which are seven in numbers and these seven colours form further colours which may call primary, secondary and tertiary colours.

SPECTRUM

These seven colours form band which is called spectrum they are in VIBGYOR pattern where red light has highest frequency and violet light has lowest frequency range.
there are two kinds of spectrum i.e line spectrum and electromagnetic spectrum.