Verified Solution • 2025–26 Session moderate

QAIPM-2000-Ph-3025: NEET 2000 Physics - Class 11 AIPM-2000-Ph-3025 Solution: The (W/Q) of a Carnot engine is 1/6, now the temperature of…

The (W/Q) of a Carnot engine is 1/6, now the temperature of sink is reduced by 62∘C62^\circ C, then this ratio becomes twice, therefore the initial temperature of the sink and source are respectively

Multiple Choice Options

  • A 33∘C,67∘C33^\circ C, 67^\circ C
  • B 37∘C,99∘C37^\circ C, 99^\circ C
  • C 67∘C,33∘C67^\circ C, 33^\circ C
  • D 97 K, 37 K

Step-by-Step Verified Solution

Initially the efficiency of the engine was 1 6 which increases to 1 3 when the sink temperature reduces by 62� C. _ = 1 6 = 1 _ T 2 T 1 when T 2 = sink temperature , T 1 = source temperature _ T 2 = 5 6 T 1 Secondly, 1 3 = 1 _ T 2 _ 62 T 1 = 1 _ T 2 T 1 + 62 T 1 = 1 _ 5 6 + 62 T 1 _ T 1 = 62 _ 6 = 372 K = 372 _ 273 = 99 o C & T 2 = 5 6 _ 372 = 310 K = 310 _ 273 = 37 o C

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