The least count of a wrist watch graduated at every second is (More than one correct options) (a...

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The least count of a wrist watch graduated at every second is (More than one correct options)
(a) one second, if it has hour hand, minute hand and second hand
(b) one minute, if it has only hour hand and minute hand
(c) one second in any case
(d) one minute in any case
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