Civil Engineering - Elements of Remote Sensing - Discussion

Discussion Forum : Elements of Remote Sensing - Section 1 (Q.No. 45)
Pick up the correct statement from the following:
The surface defined by the locus of points having same phase, is called a wave front.
The wave whose surface of constant phase are parallel planes, is known as a plane wave.
The relative phase difference between the waves is important and not the absolute phase of a point on the wave
All of these
Answer: Option
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