Question

What is interference? Give all the necessary conditions for producing sustained interference.​

Answer 1

.8 CONDITION FOR SUSTAINED INTERFERENCE OF LIGHT. ... The two interfering sources must be coherent, that is, they must keep a constant phase difference. The two interfering sources must emit the light of the same wavelength and time period.

Answer 2

Answer:

Interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude .

Explanation:

(i) The two sources of light must be coherent sources. (ii) The two sources of light should be narrow sources.

(iii) The distance between the two sources should be small. of two interfering waves should either be equal or nearly equal.