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AP EAMCET2016PhysicsThermodynamics

A cylinder of fixed capacity 67.2 litres contains helium gas at STP. The amount of heat needed to rise the temperature of the gas in the cylinder by 20^ C is

Options

  1. A784 J
  2. B374 J
  3. C1000 J
  4. D500 J

Correct answer

A. 784 J

Step-by-step solution

Amount of heat needed aligned & dQ = C _v dT ( 3 2 R ) d t [ Q= 3 2 R ] & = 67.2 22.4 3 2 R d T & =3 831 3 2 20=784 ~J aligned

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