The magnitude of atmospheric pressure at sea level is equal to the pressure exerted by a :

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760 mm tall column of mercury

76 cm tall column of mercury

76 mm tall column of mercury

760 mm tall column of alcohol

answer is A.

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Detailed Solution

The magnitude of atmospheric pressure at sea level is equal to the pressure exerted by a 760mm tall column of mercury.
It means that the pressure of the air is enough to hold up a column of mercury that is 760 mm high.

Therefore, '760 mm tall column of mercury' is the correct answer.

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