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To construct a barometer, a tube of leng...

To construct a barometer, a tube of length 1m is filled completely with mercury and is inverted in a mercury cup. The barometer reading on a particular day is 76 cm. Suppose a 1m tube is filled with mercury up to 76 cm and then closed by a cork. It is inverted in a mercury cup and the cork is removed. It is inverted in a mercury column in the tube over the surface in the cup will be

A

zero

B

76 cm

C

`gt 76` cm

D

`lt 76` cm

Text Solution

Verified by Experts

The correct Answer is:
D
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