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.

Question

Quizplus · Accepted Answer

The time required for light to traverse the diameter of the nucleus of an atom is approximately 10^-22 seconds (using the given diameter of 3 × 10^-15 m and the speed of light). The closest answer choice is D, which represents this value as 10^-21 seconds.

It Has Been Suggested That a Fundamental Physical Unit of Time