Questions and Answers
Which of the following best describes reflection of an electromagnetic wave?
The wave is reflected back in the same plane
What is the normal in the context of reflection?
A line drawn perpendicular to the surface of a medium
According to the laws of reflection, what is the relationship between the incident ray and the reflected ray?
They are parallel to each other
What happens if the incident angle is 0 degrees?
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In what type of reflectors are the laws of reflection employed?
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Study Notes
Reflection of Electromagnetic Wave
- Reflection of an electromagnetic wave occurs when the wave bounces back from a surface, without changing its frequency or wavelength, but with a change in direction.
Normal in Reflection
- The normal is a line perpendicular to the surface at the point of incidence, where the incident wave meets the surface.
Laws of Reflection
- The incident ray and the reflected ray lie in the same plane, which is normal to the surface.
- The angle of incidence is equal to the angle of reflection.
Incident Angle of 0 Degrees
- If the incident angle is 0 degrees, the incident ray and reflected ray are perpendicular to the surface, and the reflection is symmetric.
Types of Reflectors
- The laws of reflection are employed in flat mirrors, curved mirrors, and other reflective surfaces.
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