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Speed of Light

1 nanosecond ...

Question

1 nanosecond is part of a second.

A

one millionth

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B

one billionth

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C

one-tenth

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Solution

The correct option is B one billionth
A nanosecond is a very short span of time. It is equal to one billionth part of a second.
1 nano second = $10^{- 9} s$

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