A refrigerator consumes an average 35   W power to operate between temperature - 10 ° C to 25…

A refrigerator consumes an average 35 W power to operate between temperature -10°C to 25°C. If there is no loss of energy then how much average heat per second does it transfer?
  1. 350 J s-1
  2. 298 J s-1
  3. 263 J s-1
  4. 35 J s-1

Solution

W+Q2=Q1

W=Q1-Q2

Q2 W=Q2Q1-Q2

Q2W=T2T1-T2

For one second, W=35 J

Q235=263298-263

Q2=263 J

Hence, average heat per second transferred =263 J s-1

Asked in: JEE Main 2021 (26 Aug Shift 2)

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