MEDIUM
Earn 100

How is energy dissipated from an electric bulb?

Important Questions on Energy

MEDIUM
Physics>Change>Energy>Dissipation of Energy
Name two solid lubricants and state where they are used.
EASY
Physics>Change>Energy>Dissipation of Energy
Why is it difficult to walk on a wet marble floor?
EASY
Physics>Change>Energy>Dissipation of Energy
What is meant by lubrication? Why is it important?
MEDIUM
Physics>Change>Energy>Dissipation of Energy
What are lubricants? List some of their uses.
MEDIUM
Physics>Change>Energy>Dissipation of Energy
Why do we use lubricants in machines?
EASY
Physics>Change>Energy>Dissipation of Energy
Name two common lubricants.
MEDIUM
Physics>Change>Energy>Dissipation of Energy
What is a lubricant ?
MEDIUM
Physics>Change>Energy>Dissipation of Energy
Why are machine parts oiled?
EASY
Physics>Change>Energy>Dissipation of Energy
Lubricating the moving surfaces will _____.
EASY
Physics>Change>Energy>Dissipation of Energy
Why are lubricants (oil or grease) applied to rubbing surfaces of machines?
EASY
Physics>Change>Energy>Dissipation of Energy
What happens when oil is added to the car engine? How does it help the car to perform better?
EASY
Physics>Change>Energy>Dissipation of Energy
Lubricants are used to increase friction.
EASY
Physics>Change>Energy>Dissipation of Energy
Why do we sprinkle fine powder on carrom board?
EASY
Physics>Change>Energy>Dissipation of Energy
A material which reduces the force of friction is called _____.
MEDIUM
Physics>Change>Energy>Dissipation of Energy
How will you reduce friction between those machine parts which rub against each other? Give the simplest method.
EASY
Physics>Change>Energy>Dissipation of Energy
Why does oiling the axles of a bicycle make the bicycle move more easily?
EASY
Physics>Change>Energy>Dissipation of Energy
Cotyledons are also called-
EASY
Physics>Change>Energy>Dissipation of Energy
Which of the following should be used to reduce friction on a carrom board?
MEDIUM
Physics>Change>Energy>Dissipation of Energy
Explain with the help of diagrams, how the use of oil reduces friction between two surfaces in contact with each other.
EASY
Physics>Change>Energy>Dissipation of Energy
Name the following:

A non-sticky material used to reduce friction. (Sandpaper/Lubricant)