Read the following statements: A. When small temperature difference between a liquid and its surrounding is doubled, the rate of loss of heat of the liquid becomes twice. B. Two bodies P and Q having equal surface areas are maintained at temperature 10^(°) C and 20^(°) C. The thermal radiation emitted in a given time by P and Q are in the ratio 1: 1.15. C. A Carnot Engine working between 100 ~K and 400 ~K has an efficiency of 75%. D. When small temperature difference between a liquid and its surrounding is quadrupled, the rate of loss of heat of the liquid becomes twice. Choose the correct answer from the options given below:

Thermodynamics: JEE Main 2022 Physics question

JEE Main 2022 · 27 Jul, Morning shift · Q7346

JEE Main 202227 Jul, Morning shiftPhysicsHardThermodynamics163× since 2002

Read the following statements : A. When small temperature difference between a liquid and its surrounding is doubled, the rate of loss of heat of the liquid becomes twice. B. Two bodies

P

and

Q

having equal surface areas are maintained at temperature

10^{\circ} \mathrm{C}

and

20^{\circ} \mathrm{C}

. The thermal radiation emitted in a given time by

\mathrm{P}

and

\mathrm{Q}

are in the ratio

1: 1.15

. C. A Carnot Engine working between

100 \mathrm{~K}

and

400 \mathrm{~K}

has an efficiency of

75 \%

. D. When small temperature difference between a liquid and its surrounding is quadrupled, the rate of loss of heat of the liquid becomes twice. Choose the correct answer from the options given below :

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