Optics Question 1027
Question: For the sustained interference of light, the necessary condition is that the two sources should
[DPMT 1996; RPMT 1998, 2003]
Options:
A) Have constant phase difference
B) Be narrow
C) Be close to each other
D) Of same amplitude
Show Answer
Answer:
Correct Answer: A
Solution:
The essential condition for sustained interference is constancy of phase difference.
