What propagation of light defines its motion in a straight line?

Circular

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Curvilinear

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Elliptical

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Rectilinear

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Solution

The correct option is D Rectilinear
As the names suggest, Circular, means in the shape of a circle, Curvilinear means a curved path or line, Elliptical means shaped like ellipse and Rectlinear means along a straight line.
Light always follows a straight line while travelling, hence it is Rectilinear.

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The property of light travelling in straight lines is called ____________ propagation.

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Beginnings	Endings
1. A pinhole camera is	(a) travelling of light in a straight line.
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