Advertisements
Advertisements
प्रश्न
A substance is in the form of a solid at 0°C. The amount of heat added to this substance and the temperature of the substance are plotted on the following graph:
If the specific heat capacity of the solid substance is 500 J/kg °G, find from the graph, the mass of the substance.
उत्तर
From graph heat supplied is 800 joule during change in temperature from 0 to 80°C.
Heat = Mass × Sp. heat capacity × Rise in temperature
800 = m × 500 × 80
m = `1/50` kg
m = 20 g
APPEARS IN
संबंधित प्रश्न
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 ?
Read the following paragraph and answer the questions.
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.
i. Heat is transferred from where to where?
ii. Which principle do we learn about from this process?
iii. How will you state the principle briefly?
iv. Which property of the substance is measured using this principle?
What is the specific heat capacity of melting ice?
What is the specific heat capacity of boiling water?
The substances like water which have ........... Heat capacity warm up more slowly than substances like iron which have .......... heat capacity.
Why are athletes advised to put on extra clothes after competing on event?
Will the value of specific heat’capacity and specific latent heat of a substance change if the scale is °F instead of °C?
Which of the following substances (A, B and C) has the highest specific heat?
