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AP EAMCET202017 Sep 2020Evening ShiftPhysicsThermodynamicsActual

An ideal Carnot's engine with an efficiency of (30 % ) operates between a source and a sink. If the temperature of the source is (500 ~K ), that of the sink is

Options

  1. A(27^ C )
  2. B(57^ C )
  3. C(77^ C )
  4. D(107^ C )

Correct answer

C. (77^ C )

Step-by-step solution

Efficiency of Carnot's engine, ( =30 %=0.3 ) Temperature of source, (T₁=500 ~K ) Temperature of sink, (T₂= ) ? We know that, efficiency of Carnot engine, ( array rlrl & =1- T₂ T₁ 0.3=1- T₂ 500 & T₂ 500 & =1-0.3 & T₂ & =0.7 500 & = & 350 ~K =(350-273)^ C =77^ C array )

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