defination of lightyear
MissMishthiArora:
distance travelled by light in a year is called a light year.
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bouncing back of light after striking a surface.........
second definition
light is a form of energy that gives us the sensation of sight .
second one perfect definition
second definition
light is a form of energy that gives us the sensation of sight .
second one perfect definition
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the distance that light travels in one year about 9.4607×10.
the lightyear is the product of julian year ...
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