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Thermal Physics

Cool goIITian

Joined:	24 Oct 2007
Post:	90

26 Jan 2008 20:53:05 IST

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482

NCERT QUESTION 12.10

None

A refrigerator is to maintain eatables kept inside it at 9 deg.celsius.If room temperatue is 36 deg.C,calculate the coefficient of performance

My answer is not matching with the answer given at the back;

I am totally new to thermal physics PLEASE HELP ME rates assured

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Comments (4)

Ashwin R

Blazing goIITian

Joined: 27 Dec 2007

Posts: 324

26 Jan 2008 21:46:28 IST

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convert the temperature to kelvin ...you will get the answer

Ashwin R

Blazing goIITian

Joined: 27 Dec 2007

Posts: 324

26 Jan 2008 21:55:35 IST

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=t2/t1-t2

= 273+9

----------------- =10.4

309-282

Ashwin R

Blazing goIITian

Joined: 27 Dec 2007

Posts: 324

26 Jan 2008 22:17:36 IST

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in case of refrigetrator it is not efficiency but
it is co efficient of prefomance........sorry for the error i created i corrected it now...

rohan ghosh

Cool goIITian

Joined: 24 Oct 2007

Posts: 90

26 Jan 2008 22:22:33 IST

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Oh i was calculating with temp in celsius!

thanx for correcting

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