Question

what is rectilinear propagation of light?​

Answer 1

Answer:

Rectilinear propagation describes the tendency of electromagnetic waves (light) to travel in a straight line. Light only deviates from a straight line when the medium it is travelling through changes density. ... A light is set up behind the cardboard. The light appears through all three holes from the other side.

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Answer 2

Answer:

"Rectilinear propagation describes the tendency of electromagnetic waves (light) to travel in a straight line. Light only deviates from a straight line when the medium it is travelling through changes density. ... A light is set up behind the cardboard. The light appears through all three holes from the other side."