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प्रश्न
Observe the following diagram and answer the questions given below:
Specific heat capacity of metals
- Which element has maximum specific heat capacity? Justify.
- Which element has minimum specific heat capacity? Justify.
- Define specific heat of object.
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उत्तर
- Maximum specific heat capacity is found in iron. The lead sphere absorbs less heat, which results in less heat transmission in the wax, so the sphere reaches the least depth into the wax in the activity. In contrast, the iron sphere absorbs more heat, which results in more heat transmission in the wax, so the sphere goes the deepest into the wax.
- A minimum specific heat capacity exists for lead. The lead spherical penetrates the wax the least because it absorbs less heat and transmits less heat to the wax.
- The amount of heat energy required to raise the temperature of a unit mass of an object by 1°C is called the specific heat of that object.
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संबंधित प्रश्न
Specific heat capacity of substance A is 3.8 J g-1K-1 whereas the specific heat capacity of substance B is 0.4 J g-1 K-1
(i) Which of the two is a good conductor of heat?
(ii) How is one led to the above conclusion?
(iii) If substances A and B are liquids then which one would be more useful in car radiators?
Give a mathematical relation between Heat Capacity and Specific Heat Capacity.
Name a liquid which has the highest specific heat capacity.
The specific heat capacity of water is :
Name two green house gases ?
How will climate changes affect the various animal species?
Name and state the principle used to measure the specific heat capacity of a substance.
Equal heat is given to two objects A and B of mass 1 g. Temperature of A increases by 3°C and B by 5°C. Which object has more specific heat? And by what factor?
Give one example where high specific heat capacity of water is used as cooling.
A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as heat reservoir to keep juice bottles without freezing?
Write the approximate values of the specific latent heat of fusion of ice.
Explain, why is water sprayed on roads in evening in hot summer?
If substances A and B are liquids then which one would be more useful in car radiators?
Given: Specific heat capacity’A’ 3.8 J/g /K. Specific heat capacity ‘B’ 0.4 J/g /K.
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
1 kg of water freezes to form ice at 0°C. What amount of heat is withdrawn?
Solve the following problem.
What is the specific heat of metal if 50 cal of heat is needed to raise 6 kg of the metal from 20°C to 62 °C?
If 'Cp' and 'Cv' are molar specific heats of an ideal gas at constant pressure and volume respectively. If 'λ' is the ratio of two specific heats and 'R' is universal gas constant then 'Cp' is equal to ______.
Conductors have generally high specific heat capacities and insulators have low specific heat capacities.
To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.
