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`        A vertical hollow cylinder of height 1.52m is fitted with a movable piston of negligible mass and thickness l.the lower half of the cylinder contains an ideal gas and the upper half is filled with mercury .the cylinder is initially at 300k.when the temperature is raised half o the mercury comes out of the cylinder. Find the temperature assuming the thermal expansion of mercury to be negligible  `
23 days ago

## Answers : (1)

Vikas TU
8383 Points
```							Dear student Pressure of gas = pressure of Hg(mercury) + pressure of atmospheric airPressure of Gas = 76 cm of Hg + 76 cm of air.Pressure of Gas P₁ = 152 cm.  Cylinder initial  (T₁) = 30  V = V₁ /2 , here V₁ is the volume of the cylinder.  V = 76/2 =38After heating ,  Pressure of Gas = Pressure of Hg + Pressure of Atmospheric air= 38 + 76P₂= 114 cm.   , V₂ = 3V₁ /4Now applying the Gas equation .    = (152 x V₁) / 2 x 300 = [144 x (3V₁/4) ] / T₂= (300 × 2 × 3 × 114) / 152 × 4T₂ = 337.5
```
23 days ago
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