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TS EAMCET · Physics · Kinetic Theory of Gases

The following figure shows a Carnot engine that works between temperatures T1=400K and T2=200K and drives a Carnot refrigeration that works between temperatures T3=350K and T4=250K.The quantity Q3Q1 will be

  1. A 1.5
  2. B 2.0
  3. C 2.25
  4. D 1.75
Verified Solution

Answer & Solution

Correct Answer

(D) 1.75

Step-by-step Solution

Detailed explanation

Efficiency of Carnot engine is given by, η=WQ1=1-T2T1  ...1 ⇒1-Q2Q1=1-200400, ∵W=Q1-Q2 ⇒Q2Q1=200400=12  ...2 For refrigerator, COP is given by, COP=Q4W=T4T3-T4  ...3 ⇒Q3-Q4Q4=T3-T4T4 ⇒Q3Q4-1=T3T4-1…
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