MCQ
The wave front due to a source situated at infinity is:
- ASpherical
- BCylindrical
- ✓Planar
- DNone of these
✓
Answer
Correct option: C.
Planar
when you considered it a large distance and measuring justice Mall section of it then it can be considered to be plane wavefront source at Infinity example the one coming from sun to earth surface is considered to be plain $VU$ friend from light diverging from a point source will be spherical.
So, the wave front due to a source situated at infinity is planar.
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