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A refrigerator is working between the temperature of melting ice and room temperature, which is 290 K. Calculate work done by the refrigerator to freeze 2 kg of water.

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To solve the problem of calculating the work done by the refrigerator to freeze 2 kg of water, we will follow these steps: ### Step 1: Identify the temperatures The refrigerator operates between the temperature of melting ice (0°C or 273 K) and room temperature (290 K). ### Step 2: Determine the heat removed (Q2) To freeze water, we need to calculate the heat removed from the water. The heat removed when freezing water can be calculated using the formula: \[ Q = m \cdot L_f \] ...
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ICSE-INTERNAL ENERGY -SELECTED PROBLEMS (FROM HEAT ENGINES)
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  5. The efficiency of a carnot engine is 40%, whose sink is at a temperatu...

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  11. The efficiency of a camot's engine is 2/5. When the temperature of the...

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  13. A reversible engine converts one-sixth of heat input into work. When t...

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  14. A carnot engine has an efficiency 0.4. When the temperature of the sou...

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  15. One of the most efficient engine even developed operates between 1800 ...

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  16. A carnot's engine whose source is at 300°C takes in 5000 J of heat in ...

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  17. Calculate the coefficient of performance of refrigerator working betwe...

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  18. A refrigerator is working between the temperature of melting ice and r...

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  19. Ice melts at the rate of 5 kg per hour in a cold storage when the temp...

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  20. How much heat energy is gained when 5kg of water at 20^(@)C is brought...

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