Question

The unit of time is
(a) second
(b) minute
(c) hour
(d) All these

Answer 1

Answer:

The unit of time is second,minute and hour

Answer 2

Answer: The base unit to measure time is the second in the International System of Units (SI) and is been used all over the world.  The second calculations also include the nanoseconds and the milliseconds.

Earlier historically time was calculated based on the movement of astronomical objects.

• The movement of the sun.
• The revolution of the moon.
• Earths movement on its own axis
• The stars constellations.