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प्रश्न
State the condition for the flow of heat energy from one body to another.
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उत्तर
Heat energy always flows from a body at a higher temperature to a body at a lower temperature.
संबंधित प्रश्न
Calculate the mass of ice required to lower the temperature of 300 g of water 40°C to water at 0°C.
(Specific latent heat of ice = 336 J/g, the Specific heat capacity of water = 4.2J/g°C)
What property of water makes it an effective coolant?
Read the following paragraph and answer the questions.
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If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both the objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat resistant box (meaning that the energy exchange takes place between the two objects only), then no energy can flow from inside the box or come into the box. |
- Heat is transferred from where to where?
- Which principle do we learn about from this process?
- How will you state the principle briefly?
- Which property of the substance is measured using this principle?
What is heat? What is the S. I. unit of heat?
The specific heat capacity of water is 1 cal/g °C.
When a uniform rod is heated, which of the following quantity of the rod will increase
Which of the following substances (A, B and C) has the highest specific beat?
Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.
