Klaus is a resident professor in the Department of Astrophysics at a very prestigious university in Dublin. For one of his experiments, he needs to calculate how many revolutions the Earth has/ would have completed around the Sun from 1st January, 2001 to 31st December, 2020. Considering that there are 7305 days in the given duration, how many revolutions has the Earth completed around the Sun in the time frame?

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Solution

The correct option is B 20
The Earth takes a total of 365.25 days to complete a full revolution around the Sun. Since the given time period has 7305 days, the number of revolutions of the Earth around the Sun would be 7305/ 365.25 = 20.

Alternatively, the Earth completes one revolution around the Sun in 1 year. Since the given time period is 20 years, the Earth would have achieved 20 revolutions.

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