Effects of Heat
Trending Questions
Q.
Why Is Heat Conduction Important?
Q.
A metal spoon is placed in a cup of hot coffee. Why does the temperature of the cup with spoon decrease after a short time?
Energy is removed from the coffee mostly by conduction through spoon.
Energy is removed from the coffee mostly by convection through spoon.
Energy is removed from the coffee mostly by radiation through spoon.
The metal in the spoon has an extremely large specific heat.
Q. The substance which has negative coefficient of linear expansion is
- Lead
- Aluminum
- Iron
- Invar steel
Q.
After holding a pack of ice in your hand for some time, you put your hand in water at room temperature. Your hand would now feel ___.
hotter
strikingly colder
mildly colder
same as before
Q. Which image shows effect of thermal expansion?