Advertisements
Advertisements
प्रश्न
Two metals A and B have specific heat capacities in the ratio 2 : 3. If they are supplied the same amount of heat then
Which metal piece will show a greater rise in temperature given their masses is the same?
Advertisements
उत्तर
It is given that, two metals A and B have specific heat capacities in the ratio 2 : 3. They are supplied the same amount of heat.
Assuming, the specific heat capacities of two metals A and B are 2 C and 3 C, respectively.
It is also given that, masses are same.
Let us take the heat amount is Q and masses are m.
So, for metal A,
Amount of heat (Q) = m × 2 C × ΔtA;
and for metal B,
Amount of heat (Q) = m × 3 C × ΔtB.
Now we can write, m × 2 C × ΔtA = m × 3C × ΔtB.
Simplifying, ΔtA = 1.5 ΔtB
Therefore, it can be said that metal A will show a greater rise in temperature than metal B.
APPEARS IN
संबंधित प्रश्न
What do you understand by the following statements:
The specific heat capacity of lead is 130 Jkg-1K-1.
Water is used in hot water bottles for fomentation. Give a reason.
How much heat energy is released when 5.0 g of water at 20℃ changes into ice at 0℃? Take specific heat capacity of water = 4.2 J g-1 K-1, Specific latent heat of fusion of ice = 336 J g-1.
Name the radiations for which the green house gases are opaque ?
104g of water at 30°C is taken in a calorimeter made of copper of mass 42 g. When a certain mass of ice at 0°C is added to it, the final steady temperature of the mixture after the ice has melted, was found to be 10°C. Find the mass of ice added. [Specific heat capacity of water = 4.2 Jg–1°C–1 ; Specific latent heat of fusion of ice = 336 Jg–1; Specific heat capacity of copper = 0.4 Jg–1°C–1] .
Specific heat capacity of a substance A is 3.8 J g-1 K-1 and of substance B is 0.4 J g-1 k-1. Which substance is a good conductor of heat? How did you arrive at your conclusion?
A piece of ice is heated at a constant rate. The variation of temperature with heat input is shown in the graph below:
(i) What are represented by AB and CD?
(ii) What conclusion can you draw regarding the 110°c nature of ice from the above graph?
Calculate the ratio of two specific heats of polyatomic gas molecules.
At same temperature and pressure of an ideal gas, ____________.
Two metals A and B have specific heat capacities in the ratio 2:3. If they are supplied same amount of heat then
If the mass ratio of metal A and metal B is 3:5 then calculate the ratio in which their temperatures rise.
