Reflection of spherical wave from plane

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SUMMARY

A spherical wave originating from a point source reflects off a planar surface, necessitating the creation of a ray diagram and wavefront sketches. The Law of Reflection is crucial for accurately depicting the behavior of the reflected wave. The process involves drawing rays emanating from the point source and illustrating their interaction with the planar surface. This method is similar to ray diagrams used for reflections in mirrors but requires an understanding of wave behavior rather than just light rays.

PREREQUISITES
  • Understanding of the Law of Reflection
  • Familiarity with spherical wave concepts
  • Basic skills in sketching wavefronts and ray diagrams
  • Knowledge of wave behavior in physics
NEXT STEPS
  • Research the principles of wavefronts in wave optics
  • Study the Law of Reflection in detail
  • Learn about ray diagrams specific to wave phenomena
  • Explore applications of spherical waves in real-world scenarios
USEFUL FOR

Physics students, educators, and anyone interested in wave behavior and optics will benefit from this discussion, particularly those focusing on the reflection of waves and ray diagram techniques.

ThetaPi
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Problem statement.

A spherical wave (from a point source) reflects from a planar surface. Draw a ray diagram and sketch some wavefronts for the reflected wave.

Attempt

It is easy to sketch some wavefronts for the reflected waves; however, how is it possible to draw a ray diagram for this? I have only done ray diagrams for reflections from mirrors into a person's eyes.
 
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The same as for the eye case only that this time the rays converge at their source and diverge ( do not take these words literally) away. Use a point source on a peace of paper draw rays around it than place a line which represents the planar surface. The rest is quite intuitive.
 
ThetaPi said:
Problem statement.

A spherical wave (from a point source) reflects from a planar surface. Draw a ray diagram and sketch some wavefronts for the reflected wave.

Attempt

It is easy to sketch some wavefronts for the reflected waves; however, how is it possible to draw a ray diagram for this? I have only done ray diagrams for reflections from mirrors into a person's eyes.

Welcome to PF :smile:

Look up the Law of Reflection, that is the key here.
 

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