what is interference ? Write the condition for path difference in case of constructive and destructive interference.

Explanation

The modification in the distribution of light energy due to super postion of two or more waves of light is called interfrenece of light .
In case of constructive interference
Path difference : `delta=nlamda,` n = 0, 1, 2, 3, … ,
In case of destructive interference
Path differcne : `sigma= (n+ (1)/(2))lamda`, n = 0, 1, 2, 3, .....