Question

# 'The atmospheric pressure at a place is $$76 cm$$ of $$Hg$$? State its value in $$bar$$.

A
1.013×105 bar
B
1bar
C
1.013×105 bar
D
None

Solution

## The correct option is B $$1 bar$$$$1atm$$ is the standard atmospheric pressure. In terms of length of mercury it is $$76cm$$ of Hg.In SI units, the atmospheric pressure is $$1atm=1.01325\times 10^{5}Nm^{-2}= 1 bar$$Physics

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