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A body having 110 and70^(@)C temperatur...

A body having `110 and70^(@)C` temperatures of surrounding and of itself repectively . What would be the value of coefficient of performance ?

A

1.75

B

2.3

C

1.50

D

2.55

Text Solution

Verified by Experts

The correct Answer is:
A
Given , `T_(1)=110^(@)C,andT_(2)=70^(@)C,beta` = ?
Coefficient of performance
`beta=(T_(2))/(T_(1)_T_(2))=(70)/(110-70)=(70)/(40)=1.75`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-KINETIC THEORY OF GASES ANDRADIATION-Exercise 1
  1. The coeffcient of performance of a refrigerator working between 10^(@)...

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  2. A Carnot engine used first ideal monoatomic gas and then an ideal diat...

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  3. A body having 110 and70^(@)C temperatures of surrounding and of itsel...

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  4. What is the source temperature of the carnot engine reuired to get 70 ...

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  5. A carnot engine operates with source at 127^(@)C and sink at 27^(@)C. ...

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  6. A carnot engine has efficiency 1//5 . Efficiency becomes 1//3 when tem...

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  7. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  8. A Carnot engine, whose efficiency is 40%, takes in heat from a source ...

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  9. A refrigerator works between temperature of melting ice and room tempe...

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  10. A Carnot engine whose source is at 400 K takes 200 cal of heat and rej...

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  11. A Carnot's engine has an efficiency of 50 % at sink temperature 50^(@...

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  12. An ideal gas heat engine operates in a carnot cycle between 227^(@)C ...

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  13. A Carnot reversible engine converts 1//6 of heat input into work . Whe...

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  14. Consider the statement (A) and (B) and identify the carrect answers. ...

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  15. Solar radiation emitted by sun resembles that emitted by a body at a t...

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  16. The energy emitted per second by a black body at 27^(@)C is 10 J. If t...

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  17. The temperature of coffee in a cup with time is most likely given by ...

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  18. A surface at temperature T(0)K receives power P by radiation from a sm...

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  19. Consider a black body radiation in a cubical box at absolute temperatu...

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  20. When a gas filled in a closed vessel is heated through 1^(@)C, its pre...

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