Question

In order to demonstrate the phenomena of interference, we needs,
A. Two sources which will emit radiation of identical frequency.
B. Two sources which will emit radiation of nearly identical frequency.
C. Two sources which will emit radiation of the identical frequency and have a specific phase relationship.
D. Two sources which will emit radiation of the different wavelengths.

Answer 1

Hint: The interference which will be a phenomenon in which two waves superposed to create a resultant wave of higher, lower, or the identical amplitude. The constructive and destructive interference which will cause the interaction of the waves that are in connection or coherent with each other. This will be helpful in answering this question.

Complete step by step solution:
The interference which will be a phenomenon in which two waves superposed to create a resultant wave of higher, lower, or the identical amplitude. The constructive and destructive interference which will cause the interaction of the waves that are in connection or coherent with each other. This will be either because they come from the identical source or because they are having the identical or nearly the similar frequency. Interference effects which can be observed with all kinds of waves.

An example for the light, radio, acoustic. The resulting images or the graphs are known as interferograms. In order to demonstrate the phenomena of interference, we need two sources which will emit radiation of the identical frequency and will be having a specific phase relationship. Therefore the question has been solved.

The correct answer has been obtained as option C.

Note:
Interferometry has been played as a necessary role in the advancement of the physics area. And also this is having a wide range of applications in the physical and engineering measurement. Optical interferometry, Radio interferometry and also acoustic interferometer.