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Which of the following time measuring de...

Which of the following time measuring devices is most precise ?
(A) A wall clock
(B) A stop watch
(C) A digital watch
(D) An atomic clock
Give reason for your answer.

Text Solution

Verified by Experts

A wall clock measures time accurately upto one second. A stop watch measures time accurately upto a fraction of a second. A digital watch measures time up to a fraction of second. An atomic clock measures time most precisely as its precision is 1s in `10^(13)` s.
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