**coherent**, then the resultant intensity is given by

I = I

_{1}+ I

_{2}+ 2 √(I

_{1}I

_{2}Cos Θ), where Θ is the phase difference between two waves. For the constructive interference the value of Θ = 0°, so that the Cos Θ = 1 and for the destructive interference the value of Θ = 90°, so that the Cos Θ = 0.

In case of the

**incoherent**sources or waves we can the intensity simply by algebraic method that means I = I

_{1}+ I

_{2}.

Watch the video below for detailed derivation

## No comments:

## Post a Comment

Do not spam. Spammers will be banned from this site