What is the systematic departure of the declination from its mean value during a period of 24 hours? Options: A . &nbspDiurnal variation B . &nbspAnnual variation C . &nbspSecular variation D . &nbspIrregular variation

What is the systematic departure of the declination from its mean value during a

Question

What is the systematic departure of the declination from its mean value during a period of 24 hours?

Options:

A . Diurnal variation

B . Annual variation

C . Secular variation

D . Irregular variation

Answer: Option A
Answer: (a).Diurnal variation

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