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The Brainliest Answer!
2016-02-26T15:50:07+05:30
 if the direction of travel of light is reversed,then the light will show the same path.............this is the principle of reversibility
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2016-02-27T10:37:08+05:30
Reversibility of light states that the path of light can be reversed when refracted or reflected by changing the direction of incident ray
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