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Physics for IGCSE & O level - Measurements And Units (Section 3 - No. 8)
What is a nanosecond?
10⁻¹ second
10⁻² second
10⁻⁹ second
10⁻¹² second
Explanation
A nanosecond is one billionth of a second (10⁻⁹ second).
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