Question

# The average of all solar days in which the earth completes one revolution around the sun is called ____.

A
Solar day
B
Mean solar day
C
Hour
D
Millenium

Solution

## The correct option is B Mean solar dayThe average of all solar days in which the earth completes one revolution around the sun is called the mean solar day. The mean solar day is divided into twenty-four equal intervals and each interval is called hour.

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