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प्रश्न
What are the good and bad conductors of heat ? Give two examples of each.
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उत्तर
Good conductors. “The substances through which heat is easily conducted are called good conductors of heat.”
Example : Copper, iron.
Bad conductors. “The substances through which heat is not conducted easily are called bad conductors of heat or poor conductors of heat.”
Example : Wood, cloth.
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संबंधित प्रश्न
Write true or false for a given statement.
Equal volumes of different liquids expand by different amounts when they are heated to the same rise in temperature.
Fill in the blank
We use a ________ for measuring the temperature of a body.
Fill in the blank
In a thermometer, the commonly used liquid is _______
Fill in the blank
Gases expand _______ than the liquids.
Fill in the blank
Black and dull surfaces are ______ of heat.
Select the correct alternative
The temperature of pure melting ice is
Name two substances which expand on heating.
Why do we use cooking utensils made up of copper.
Why is an oven made of double walls with the space in between filled with cork ?
The applied heat energy can be realized as an increase in the average kinetic energy of the molecules.
