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Question

A billionth of a second is defined as a _________.

A
Millisecond
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B
Microsecond
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C
Nanosecond
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D
Picoseconds
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E
None of the above
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Solution

The correct option is C Nanosecond

A billionth of a second is defined as a Nanosecond.

A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, 1/1,000,000,000 of a second, or 10−9 seconds.The term combines the prefix nano- with the basic unit for one-sixtieth of a minute.

A nanosecond is equal to 1000 picoseconds or ​1⁄1000 microsecond. Time units ranging between 10−8 and 10−7 seconds are typically expressed as tens or hundreds of nanoseconds.

Time units of this granularity are commonly encountered in telecommunications, pulsed lasers, and related aspects of electronics.


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