chalte chalte thermo 2

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HCV pg 35 q 33
A uniform tube closed at one end,ccontains at one end contains a pallet of mercury 10cm long.When the tube is kept verticallywith the closed end upward,length of the air colummn trapped is 20 cm. Find the length of the air column trapped when the tube is inverted so that the inverted end goes down...
Ans-15cm

#Physics #Thermal physics

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abhishek sahoo ·2010-03-03 22:33:46

case=1 -net pressure on air in V=P_atm-Ïhg=65Ïg

case-2--net pressure on air in V=P_atm+Ïh^'g

P₁V₁=P₂V₂

65Ïg*A*20={75Ïg+Ïh^'g}A*10
ON SOLVING..
h^'=15

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