Question

The _____ clock, which keeps time on the basis of radiation from cesium
atoms is accurate to about three millionths of a second per year.
a) Quartz b) Mica c) Atomic d) Solar

Answer 1

Answer:

Atomic

Explanation:

bcoz atomic clock keeps time on the basis of radiation from cesium

Answer 2

Answer:

IT'S ATOMIC CLOCK

OPTION (C).