For constructive interference between two waves of equal wavelength, the phase angle `delta` should be such that

For constructive interference to take place between two light waves, the pahse difference should be

For constructive interference, the phase difference between two waves should be

The condition for destructive interference between two waves is that their phase difference should be "…………."

For constructive interference path difference between two interfering waves must be equal to

There is a destructive interference between the two waves of wavelength lambda coming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by

There is a destructive interference between the two waves of wavelength lambda coming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by