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The time from sunrise to sunset is termed as _______________

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The time from sunrise to sunset is termed as _______________

(a) Slope

(b) Day length

(c) Local solar time

(d) Solar intensity

The question was asked during an interview for a job.

Query is from Solar Radiation Measurement in chapter Solar Energy of Energy Engineering

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The correct choice is (b) Day length

For explanation: The time from sunrise to sunset is termed as day length. On earth, daytime is roughly the period of the day during which any given point in the world experiences natural illumination from especially direct sunlight. Daytime occurs when the sun appears above the local horizon, that is, anywhere on the globe’s hemisphere facing the Sun. During daytime, an observer sees indirect sunlight while in the shade, which includes cloud cover.

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