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प्रश्न
A given mass of water is cooled from 10°C to 0°C. State the volume changes you will observe. Represent these changes on a temperature-volume graph.
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उत्तर
When water is heated from 0°C to 4°C, its volume first falls; when it is heated further from 4°C to 10°C, its volume grows. Thus, at 4°C, the water volume is at its lowest.
The following temperature-volume graph indicates how the volume of water changes from 0°C to 10°C:
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संबंधित प्रश्न
1 joule = 4.2 calorie
Is this relation correct?
Explain the following:
Land becomes warmer than water during the day.
Explain the following:
It is cool in the shade, when it is hot outside.
Where am I?
The mean annual temperature is 25°C around me.
Match the following
| 1. | Heat | 0o C |
| 2. | Temperature | 100o C |
| 3. | Thermal Equilibrium | kelvin |
| 4. | Ice cube | No heat flow |
| 5. | Boiling water | joule |
Consider the statement given below and choose the correct option.
Assertion: A system can be converted from one state to another state.
Reason: It takes place when the temperature of the system is constant.
Numerical Problems.
An iron ball requires 1000 J of heat to raise its temperature by 20°C. Calculate the heat capacity of the ball.
______ determines the direction of the flow of heat.
