Question

why two independent sources of light are never coherent​

Answer 1

Answer:HERE YOU GO!!1

Explanation:Two independent sources of light cannot be coherent. This is because light is emitted by individual atoms, when they return to ground state. Even the smallest source of light contains billions of atoms which obviously cannot emit light waves in the same phase.

Answer 2

Answer:

because two independent sources have diferent properties . as the sources which are originated from oneday source are coharent or can emity light with same wavelength, frequency e

etc.