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Questions  

If an air bubble rises from the bottom of a mercury tank to the top, its volume becomes 3 times. If atmospheric pressure is 75 cm of mercury, depth of mercury tank is 

a
75 cm
b
150 cm
c
225 cm
d
37.5 cm

detailed solution

Correct option is B

(Patm + Pgh) Vbot = Patm . Vtop

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