Q.

Which of the following is the meaning of a beam 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 B.

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Detailed Solution

The path along which light energy travels is the meaning of a beam of light.
A beam of light can be defined as the collection of a large number of rays of light energy in a particular direction. In the pictorial representation of the beam of light, the arrowhead denotes the direction in which the light energy travels and the straight lines denote the beam of light energy.
 
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