AP EAMCET201921 Apr 2019Morning ShiftPhysicsThermodynamicsActual
Match the temperatures of the source and sink ( T₁ and T₂ respectively) of a Carnot heat engine given in List-I with the corresponding efficiencies given in List-II. The correct match is Codes array llll A & B & C & D array
Options
- A(iii) (iv (ii) (i)
- B(iv) (iii) (ii) (i)
- C(iii) (i) (iv) (ii)
- D(iii) (ii) (iv) (i)
Correct answer
D. (iii) (ii) (iv) (i)
Step-by-step solution
Key Ideal Efficiency of a Carnot engine is given as, =1- T₂ T₁ where, T₁= surface temperature and T₂= k temperature. Now, the efficiencies are, (a) When T₁=500 ~K , T₂=300 ~K =1- 300 500 =0.4 (b) When T₁=500 ~K , T₂=350 ~K =1- 350 500 =0.3 (c) When T₁=800 ~K , T₂=400 ~K =1- 400 800 =0.5 (d) When T₁=450 ~K , T₂=360 ~K =1- 360 450 =0.2 Hence, the correct code is matches to option (d).