Question
Physics Question on Youngs double slit experiment
To demonstrate the phenomenon of interference we require two soruces which emit radiation of
A
nearly the same frequency
B
the same frequency
C
different wavelength
D
the same frequency and having a definite phase relationship
Answer
the same frequency and having a definite phase relationship
Explanation
Solution
To demonstrate interference, to coherent sources are required. Sources are called coherent when they emit waves of nearly equal or equal frequency and a constant phase difference throughout.