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NEET 2018
Exam
NEET
Year
2018
Subject
Physics
Chapter
Thermodynamics

NEET 2018 · Physics · Thermodynamics

The efficiency of an ideal heat engine working between the freezing...

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

Options

  1. A6.256.25%
  2. B2020%
  3. C26.826.8%
  4. D12.512.5%

Correct answer

C. 26.826.8%

Step-by-step solution

efficiency of ideal heat engine, η=1−T2T1η = 1 - \dfrac{{T}_{2}}{{T}_{1}}

T2:{T}_{2} : temperature of sink

T1:{T}_{1} : temperature of source

Efficiency in Percentage, η = \dfrac{{T}_{1} - {T}_{2}}{{T}_{1}} \times 100<br/><br/><br /><br />{T}_{1} = 373, {T}_{2} = 273<br/><br/><br /><br />η = \dfrac{100}{373} \times 100 = 26.8%
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