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Angular distance of sun’s rays north or south of the equator is called _______

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Angular distance of sun’s rays north or south of the equator is called _______

(a) Declination

(b) Hour angle

(c) Latitude

(d) Air mass

I have been asked this question during an online exam.

My question is taken from Solar Constant in portion Solar Energy of Energy Engineering

1 Answer

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Right answer is (a) Declination

For explanation: Declination is the angular distance of sun’s rays north or south of the equator. It is the angle between the line extending from the centre of the sun to the centre of the earth and the projection of this line upon earth’s equatorial plane.

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