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Physics
Two sources of waves are called coherent if
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Q. Two sources of waves are called coherent if
Wave Optics
A
Both have the same amplitude of vibrations
7%
B
Both produce waves of the same wavelength
5%
C
Both produce waves of the same wavelength having constant phase difference
83%
D
Both produce waves having the same velocity
5%
Solution:
Two coherent sources must have a constant phase difference otherwise they can not produce interference.