Refrigerators and Heat Pumps
PHXI12:THERMODYNAMICS

371350 The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is \( - 20^\circ C\), the temperature of the surroundings to which it rejects heat is.

1 \(41^\circ C\)
2 \(11^\circ C\)
3 \(21^\circ C\)
4 \(31^\circ C\)
PHXI12:THERMODYNAMICS

371351 The inside and outside temperature of a refrigerator are \(273{\rm{ }}K\) and \(303{\rm{ }}K\) respectively. Assuming that refrigerator cycle is reversible, for every joule of work done the heat delivered to the surrounding will be

1 \(9\;J\)
2 \(10\;J\)
3 \(13\;J\)
4 \(11\;J\)
PHXI12:THERMODYNAMICS

371352 A refrigerator with coefficient of performance 3 releases \(200 \mathrm{~J}\) of heat to a hot reservior. The work done on the working substance is

1 \(100\;J\)
2 \(\dfrac{100}{3} J\)
3 \(150\;J\)
4 \(\dfrac{200}{3} J\)
PHXI12:THERMODYNAMICS

371353 An ideal refrigerator has a freezer at a temperature of \(-13^{\circ} \mathrm{C}\). The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

1 \(325\;K\)
2 \(325^\circ C\)
3 \(320^\circ C\)
4 \(39^\circ C\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXI12:THERMODYNAMICS

371350 The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is \( - 20^\circ C\), the temperature of the surroundings to which it rejects heat is.

1 \(41^\circ C\)
2 \(11^\circ C\)
3 \(21^\circ C\)
4 \(31^\circ C\)
PHXI12:THERMODYNAMICS

371351 The inside and outside temperature of a refrigerator are \(273{\rm{ }}K\) and \(303{\rm{ }}K\) respectively. Assuming that refrigerator cycle is reversible, for every joule of work done the heat delivered to the surrounding will be

1 \(9\;J\)
2 \(10\;J\)
3 \(13\;J\)
4 \(11\;J\)
PHXI12:THERMODYNAMICS

371352 A refrigerator with coefficient of performance 3 releases \(200 \mathrm{~J}\) of heat to a hot reservior. The work done on the working substance is

1 \(100\;J\)
2 \(\dfrac{100}{3} J\)
3 \(150\;J\)
4 \(\dfrac{200}{3} J\)
PHXI12:THERMODYNAMICS

371353 An ideal refrigerator has a freezer at a temperature of \(-13^{\circ} \mathrm{C}\). The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

1 \(325\;K\)
2 \(325^\circ C\)
3 \(320^\circ C\)
4 \(39^\circ C\)
PHXI12:THERMODYNAMICS

371350 The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is \( - 20^\circ C\), the temperature of the surroundings to which it rejects heat is.

1 \(41^\circ C\)
2 \(11^\circ C\)
3 \(21^\circ C\)
4 \(31^\circ C\)
PHXI12:THERMODYNAMICS

371351 The inside and outside temperature of a refrigerator are \(273{\rm{ }}K\) and \(303{\rm{ }}K\) respectively. Assuming that refrigerator cycle is reversible, for every joule of work done the heat delivered to the surrounding will be

1 \(9\;J\)
2 \(10\;J\)
3 \(13\;J\)
4 \(11\;J\)
PHXI12:THERMODYNAMICS

371352 A refrigerator with coefficient of performance 3 releases \(200 \mathrm{~J}\) of heat to a hot reservior. The work done on the working substance is

1 \(100\;J\)
2 \(\dfrac{100}{3} J\)
3 \(150\;J\)
4 \(\dfrac{200}{3} J\)
PHXI12:THERMODYNAMICS

371353 An ideal refrigerator has a freezer at a temperature of \(-13^{\circ} \mathrm{C}\). The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

1 \(325\;K\)
2 \(325^\circ C\)
3 \(320^\circ C\)
4 \(39^\circ C\)
PHXI12:THERMODYNAMICS

371350 The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is \( - 20^\circ C\), the temperature of the surroundings to which it rejects heat is.

1 \(41^\circ C\)
2 \(11^\circ C\)
3 \(21^\circ C\)
4 \(31^\circ C\)
PHXI12:THERMODYNAMICS

371351 The inside and outside temperature of a refrigerator are \(273{\rm{ }}K\) and \(303{\rm{ }}K\) respectively. Assuming that refrigerator cycle is reversible, for every joule of work done the heat delivered to the surrounding will be

1 \(9\;J\)
2 \(10\;J\)
3 \(13\;J\)
4 \(11\;J\)
PHXI12:THERMODYNAMICS

371352 A refrigerator with coefficient of performance 3 releases \(200 \mathrm{~J}\) of heat to a hot reservior. The work done on the working substance is

1 \(100\;J\)
2 \(\dfrac{100}{3} J\)
3 \(150\;J\)
4 \(\dfrac{200}{3} J\)
PHXI12:THERMODYNAMICS

371353 An ideal refrigerator has a freezer at a temperature of \(-13^{\circ} \mathrm{C}\). The coefficient of performance of the engine is 5. The temperature of the air (to which heat is rejected) will be

1 \(325\;K\)
2 \(325^\circ C\)
3 \(320^\circ C\)
4 \(39^\circ C\)