Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

Two sources are producing waves as given in the options below. Which two sources are called coherent?

Options:

of same velocity

of equal wavelength

having a constant phase difference

having wavefront of same shape

Correct Answer:

having a constant phase difference

Explanation:

The correct answer is Option (3) → having a constant phase difference

Two sources are called coherent, if they produce waves that have the same frequency or wavelength, and a constant phase difference.