Which of the following is the SI base unit for time?

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Multiple Choice

Which of the following is the SI base unit for time?

Time is measured in seconds in the SI system. The second is the base unit for time, while minutes, hours, and days are simply multiples of seconds (60 seconds per minute, 60 minutes per hour, 24 hours per day). The second is defined very precisely as a specific number of oscillations of radiation from cesium-133, which gives a universal standard for all scientific measurements. Because of this definition, seconds are the fundamental reference, and all other time units are derived from them.

Time is measured in seconds in the SI system. The second is the base unit for time, while minutes, hours, and days are simply multiples of seconds (60 seconds per minute, 60 minutes per hour, 24 hours per day). The second is defined very precisely as a specific number of oscillations of radiation from cesium-133, which gives a universal standard for all scientific measurements. Because of this definition, seconds are the fundamental reference, and all other time units are derived from them.

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