Question

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Answer 1

Answer:

Electromagnetic waves to travel in a straight line. Light only deviates from a straight line when the medium it is travelling through changes density. This is called refraction. Light does not deviate when travelling through a homogeneous medium, which has the same refractive index throughout

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Answer 2

Answer:

Rectilinear propagation of light refers to the propensity of light to travel along a straight line without any interference in its trajectory. ...

Explanation:

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