NEET Physics Thermodynamics Questions Solved

NEET - 2016


The temperature inside a refrigerator is t2C and the room temperature is t1C . The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be -

(a)t1t1-t2      (b) t1+273t1-t2

(c) t2+273t1-t2    (d) t1+t2t1+273


(b) For a refrigerator, we know that 



Q1=amount of heat delivered to the room

W = electrical energy consumed

T1= room temperature= t1+273

T2=temperature of sink=t2+273



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