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Question
Interference effects of light from two sources can be observed if the sources are ______.
Options
of different frequency
coherent
of different frequency and random phases
independent
MCQ
Fill in the Blanks
Solution
Interference effects of light from two sources can be observed if the sources are coherent.
Explanation:
If the two sources are coherent, the phase difference at any point in time will not change, and the interference pattern will be stable; that is, the positions of maxima and minima will not change over time.
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