Q.

Which of the following is the meaning of a ray of light?


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a

The path along which light energy travels

b

Collection of rays of light

c

Parallel rays of light

d

None of the above 

answer is A.

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Detailed Solution

The path along which light energy travels is the meaning of a ray of light.
A ray of light can be defined as the path along which light energy travels in a particular direction. In the pictorial representation of the ray of light, the arrowhead denotes the direction in which the light energy travels, and the straight line denotes the ray of light energy.
 
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