Question

Which one of the following can not be used for measurement of time ?

A

A leaking tap

B

Single pendulum

C

Shadow of an object during the day

D

Blinking of eyes

Medium
Solution
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Correct option is D)

"A leaking tap" is the answer because we cannot estimate when will the drop fall.
where as
⇒ simple pendulum shows time by its to and fro motion.
⇒ in olden days  the time is estimated by the shadow of an object
⇒ blinking of eyes is rarely seen which blinks by time unless by reflex actions

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