Question

The light waves from two independent monochromatic light sources are given by, y₁ = 2 sin ωt and y₂ = 3 cos ωt. Then the correct statement is ____________.

Options

• both the waves are coherent

• both the waves are incoherent

• both the waves are in the same phase

• both the waves have same time period

Answer 1

The light waves from two independent monochromatic light sources are given by, y₁ = 2 sin ωt and y₂ = 3 cos ωt. Then the correct statement is both the waves are incoherent.

Explanation:

Because they can't generate waves with a consistent phase difference, two separate light sources can't be coherent.