Advertisements
Advertisements
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.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
A liquid X has the maximum specific heat capacity and is used as a coolant in Car Radiators. Name the liquid X.
Why do the farmers fill their fields with water on a cold winter night?
Describe a method to determine the specific heat capacity of a solid, like a piece of copper ?
It is generally cold after a hail-storm then during and before the hail storm. Give reason.
Name three fossil fuels that emit carbon dioxide into the atmosphere ?
State the impact of global warming on life on the earth.
How will climate changes affect the various animal species?
What is the specific heat capacity of melting ice?
The product of mass and specific heat is known as ..........
Name the substance which has maximum specific heat capacity.
Why is specific heat capacity taken as a measure of thermal inertia?
Give two reasons as to why copper is preferred over other metals for making calorimeters.
If, in a central heating system, steam enters a radiation pipe at 100°C and water leaves the radiation pipe at 100°C, can this radiation pipe heat a room? Give an explanation for your answer.
A piece of iron of mass 2.0 kg has a thermal capacity of 966 J/°C. What is its specific heat capacity in S.I. units?
Calculate the ratio of two specific heats of polyatomic gas molecules.
Derive Meyer’s relation for an ideal gas.
A monoatomic gas of pressure 'P' having volume 'V' expands isothermally to a volume '2V' and then adiabatically to a volume '16V'. The final pressure of the gas is ______.
(ratio of specific heats = `5/3`)
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 ______.
Calculate the amount of heat energy required to raise the temperature of 200 g of copper from 20°C to 70°C. Specific heat capacity of copper = 390 J kg-1 K-1.
