The travelling of light can be observed with a timescale of which is part of a second.
A
microseconds
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B
one-millionth
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C
nanoseconds
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D
one-billionth
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Solution
The correct options are C nanoseconds D one-billionth One nanosecond is a very short span of time used to measure one-billionth part of a second. Using nanoseconds, the time taken by a light particle to travel a particular distance can be calculated.