JEE MainPhysicsHeat and ThermodynamicsMCQ+4 / −1
An amount of ice of mass and temperature is transformed to vapour of temperature by applying heat. The total amount of work required for this conversion is, (Take, specific heat of ice , specific heat of water , specific heat of steam , Latent heat of ice and Latent heat of steam )
- A3022 J
- B3043 J
- C3003 J
- D3024 J
View written solutionFree
Correct answer: B
- Heat required to convert ice at to steam at
We add heat in five stages:
- heat ice from to
- melt ice at
- heat water from to
- convert water at to steam
- heat steam from to
Given:
- Stage 1: Heating ice from to
- Stage 2: Melting the ice at
- Stage 3: Heating water from to
- Stage 4: Converting water at to steam
- Stage 5: Heating steam from to
- Total heat required
So, approximately,
- Matching with options
- A:
- B:
- C:
- D:
Therefore, the correct option is B.
Note: The question says "work required," but in this thermodynamics context it clearly means the heat energy required for the full conversion.
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