Advertisements
Advertisements
प्रश्न
A certain amount of heat Q will warm 1 g of material X by 3°C and 1 g of material Y by 4°C. Which material has a higher specific heat capacity?
Advertisements
उत्तर
We know that heat Q warms 1 g of material X by 3°C. Therefore, substituting these values in a specific heat formula, we get:
Q = 1 × Cx × 3 ...(1)
Similarly, heat Q warms 1 g of material Y by 4°C, therefore
Q = 1 × Cx × 4 ...(2)
As the same heat Q is provided to both materials, the left-hand side of equations (1) and (2) are the same. Hence, on comparing the right-hand sides, we get,
3Cx = 4Cy
Cx = `4/3`Cy and
Cy = `3/4`Cx
Hence, material X has greater specific heat than material Y. It is because its temperature rises less than Y for the mass amount of heat.
संबंधित प्रश्न
What do you understand by the following statements:
The heat capacity of the body is 60JK-1.
Calculate the amount of heat released when 5.0 g of water at 20°C is changed into ice at 0°C.
(Specific heat capacity of water = 4.2 J/g°C
Specific latent heat of fusion of ice = 336 J/g)
From the options given below the specific heat of _______ is maximum.
Consider the statement given below and choose the correct option.
Assertion: Radiation is a form of heat transfer which takes place only in vacuum.
Reason: The thermal energy is transferred from one part of a substance to another part without the actual movement of the atoms or molecules.
Explain why the specific heat capacity at constant pressure is greater than the specific heat capacity at constant volume.
A diatomic gas undergoes adiabatic change. Its pressure 'P' and temperature 'T' are related as p ∝ Tx, where x is ______.
Which of the following substances (A, B and C) has the highest specific heat?
To study energy exchange between hot and cold objects, the system of both objects is isolated from the environment by keeping them inside ______.
A block of ice of mass 120 g at temperature 0°C is put in 300 gm of water at 25°C. The xg of ice melts as the temperature of the water reaches 0°C. The value of x is ______.
[Use: Specific heat capacity of water = 4200 Jkg-1K-1, Latent heat of ice = 3.5 × 105 Jkg-1]
