MCQ
The wavefront of a distant source of unknown shape is approximately
- ASpherical
- BCylindrical
- CElliptical
- ✓Plane
✓
Answer
Correct option: D.
Plane
d
When the point source or linear source of light is at very large distance, a small portion of spherical or cylindrical wavefront appears to be plane. Such a wavefront is plane wavefront.
When the point source or linear source of light is at very large distance, a small portion of spherical or cylindrical wavefront appears to be plane. Such a wavefront is plane wavefront.
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