Physics, asked by dhananingthoujam36, 6 months ago

Universal Time is based on.
(a) Rotation of earth on its axis
(b) Oscillations of quartz crystal
(c) Vibrations of cesium atom
(d) Earth's orbital motion around the
sun.​

Answers

Answered by vijyaganga26
5

Answer:

. d) Earth's orbital motion around the sun

thank you

Answered by dimpleshahi1882
0

Answer:

c vibration of cesium atom

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