SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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SI unit for time
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seconds
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minutes
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hours
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days
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Explanation:
Detailed explanation-1: -The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency Cs, the unperturbed ground-state hyperfine transition frequency of the caesium-133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s–1.
Detailed explanation-2: -Second is the S.I unit of time. Other larger units of time are hours and minutes. One minute is equal to 60 seconds and 1 hour is equal to 60 minutes.
Detailed explanation-3: -Hence, second is the smallest fundamental unit of time.
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