In a refrigerator, heat from inside at 277K is transferred to a room at 300K. How many joules of heat shall be delivered to the room for each joule of electrical energy consumed ideally?

In a refrigerator, heat from inside at 277K is transferred to a room a

1.	In a refrigerator, heat from inside at 277K is transferred to a room at 300K. How many joules of heat shall be delivered to the room for each joule of electrical energy consumed ideally?
Answer» Correct Answer - A::C Coefficient of performance of a refrigerator, `beta=Q_(2)/W=T_(2)/(T_(1)-T_(2))` `:. Q_(2)=WT_(2)/(T_(1)-T_(2))` But `W= "Energy consumed by the refrigerator "=1J, T_1=300K, T_2=277K` `:. Q_2=1xx(277)/(300-277)=(277)/(23)=12J` "Heat rejected by the refrigerator", `Q_1=W+Q_2=1+12` `=13J`

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In a refrigerator, heat from inside at 277K is transferred to a room at 300K. How many joules of heat shall be delivered to the room for each joule of electrical energy consumed ideally?

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