Questions
Plane wave front is not produced by a
detailed solution
Correct option is D
Plane wave fronts are produced by parallel rays of light. A rectangular illuminated slit behaves like a line source of light which gives cylindrical wave fronts at finite distance. Rays of light emerging from point source are not parallel at finite distance, but the rays are nearly parallel at infinite distance. At large distances from the sources, we can get plane wave front.So option (4) is right answer.Talk to our academic expert!
Similar Questions
Refractive index of a long cylinder made of transparent material is increasing as we are moving away from its axis. A beam of parallel rays, parallel to the axis of the cylinder is incident on one end of the rod as shown in figure. Then which of the following diagrams correctly shows the shape of wavefront inside the rod?
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