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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Thermodynamics
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Figure shows the arrangement , gas is thermally insulated . Having pressure pg ( greater than atmospheric pressure pa ) . Spring of force constant k is initially unstretched . Position of mass m & area S is friction less and in equilibrium position , it rises up a distance x0 , then -

(a)finalpressure=pa+kx0S+mgS(b)workdonebygas=kx202(c)finalpressure=pa+kx0S(d)workdonebygas=kx202+mgx0

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