Question

To demonstrate the phenomena of interference, we require

• A. Two sources which emit radiation of same frequency
• B. Two sources which emit radiation of nearly same frequency
• C. Two sources which emit radiation of the same frequency and have a definite phase relationship
• D. Two sources which emit radiation of different wavelengths

Answer 1

The correct option is C Two sources which emit radiation of the same frequency and have a definite phase relationship

To demonstrate the phenomena of interference, we require two sources which emit radiation of the same frequency and have a definite phase relationship.