Define the terms: a ray of light and a beam of light.

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Solution

The direction or path along which light energy travels in a medium is called a ray of light. It is represented by a straight line with an arrow marked on it.
Ref. image 1
A group of light rays given out from a source is called a beam of light.
Ref. image 2

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Define the terms: a ray of light and a beam of light.

The direction or path along which light energy travels in a medium is called a ray of light. It is represented by a straight line with an arrow marked on it. Ref. image 1A group of light rays given out from a source is called a beam of light.Ref. image 2

The direction or path along which light energy travels in a medium is called a ray of light. It is represented by a straight line with an arrow marked on it.
Ref. image 1
A group of light rays given out from a source is called a beam of light.
Ref. image 2