Question

1.What is reflection? Write a short note on regular and irregular reflection.

Answer 1

Answer:

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. ... Reflection is observed with surface waves in bodies of water.

Regular reflection occurs at the surface of a plane surface like a plane mirror. Reflected rays after regular reflection are parallel. Diffused reflection occurs at the surface of a rough surface like cardboard. Reflected rays after regular reflection are not parallel.

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Answer 2

Answer:

Reflection is the change in direction of a wave at a boundary between two different media, so that the wave moves back into the medium it came from.

Reflection from a polished surface is called regular reflection and parallel rays remain parallel after reflection

Reflection from a rough surface is called diffused reflection and Parallel rays do not remain parallel after reflection.