A column of mercury of length is contained in the middle of a narrow horizontal tube…

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A column of mercury of length

h=10\text{ cm}

is contained in the middle of a narrow horizontal tube of length

1\text{ m}

, closed at both ends. The air in both halves of the tube is under a pressure of

p_0=76\text{ cm}

of mercury. The tube is slowly made vertical. The distance moved by the mercury is approximately (a)

4.5\text{ cm}

(b)

3.0\text{ cm}

(c)

2.5\text{ cm}

(d)

1.2\text{ cm}