Light travels in a line
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Light travels in a straight line.
It doesnot require any medium to travel.
But what is the question?
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Heyy mate here's your answer
Light does appear to travel in straight lines
If the object is opaque the result is a degree of blackness on the other side of it which is due to the absence of the light. The dark area is a shadow. As light does appear to travel in straight lines then light is usually modelled as straight lines in drawings
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