Advertisements
Advertisements
प्रश्न
Why does a piece of ice when touched with hands appear cold?
उत्तर
We feel cold on touching ice because heat flows from our warm hands to cold ice. Due to this flow of heat from hand to ice, the temperature of our hand falls. This is why we feel cold.
APPEARS IN
संबंधित प्रश्न
State the three units of temperature.
Who is telling the truth?
The temperature of a substance is measured in joules.
Two bodies at different temperatures are placed in contact. State the direction in which the heat will flow.
Name two substances which expand on heating.
Is conduction possible in vacuum?
When a window is accidentally left open on a winter night, will you feel uncomfortable because the cold is getting in, or because the heat is escaping from the room?
Kelvin is written as K also known as absolute scale as it starts from absolute zero temperature.
What is the concept of temperature?
Give reasons why –
chimneys are located high up in kitchens and factories