A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. Options: A . &nbspThe mercury level starts rising B . &nbspThe mercury level starts falling C . &nbspThe mercury level does not change D . &nbspThe bell jar breaks up

A barometer is kept inside a bell jar. Air is slowly pumped out of the jar.

Question

A barometer is kept inside a bell jar. Air is slowly pumped out of the jar.

Options:

A . The mercury level starts rising

B . The mercury level starts falling

C . The mercury level does not change

D . The bell jar breaks up

Answer: Option A

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