Calculate the height of the mercury column (in cm) needed to balance an atmospheric…

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Calculate the height of the mercury column (in cm) needed to balance an atmospheric pressure of

1.02\times10^{5}\,\text{Pa}

. Take

\rho_{Hg}=13.6\times10^{3}\,\text{kg\,m}^{-3}

and

g=9.8\,\text{m\,s}^{-2}

. (a)

74.0\,\text{cm}

(b)

76.5\,\text{cm}

(c)

78.6\,\text{cm}

(d)

75.0\,\text{cm}

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