Question

SI unit of time is mean solar day

• A. True
• B. False

Answer 1

The correct option is B False

1. The S.I. unit of time is second(s).
2. A second can be defined as $\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$86400$}\right.th$ part of a mean solar day,
3. i.e., $s=\raisebox{1ex}{$1$}\!\left/ \!\raisebox{-1ex}{$86400$}\right.$ one mean solar day.

Hence the given statement is False