It Has Been Suggested That a Fundamental Physical Unit of Time

question 13

Multiple Choice

It has been suggested that a fundamental physical unit of time is the time required for light to traverse the diameter of the nucleus of an atom approximately 3 × 10^-13 m) . This unit of time is approximately

• A) 1 s.
• B) 10^-4 s.
• C) 2 × 10^-20 s.
• D) 10^-21 s.
• E) 10^-23 s.

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