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प्रश्न
Tick the most appropriate answer.
Friction produces
पर्याय
heat
change of state
electricity
pressure
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उत्तर
heat
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संबंधित प्रश्न
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Give an example to illustrate the existence of the force of friction.
Give three examples to illustrate that friction is a necessary evil.
Fill in the blank.
.................... is the SI unit of force.
Fill in the blank.
More the roughness of a surface, greater is the ........................
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
Match the following.
| Column I | Column II | |
| a) | Static friction | viscosity |
| b) | Kinetic friction | least friction |
| c) | Rolling friction | objects are in motion |
| d) | Friction between the liquid layers | objects are sliding |
| e) | Sliding friction | objects are at rest |
Assertion: We can live very happily if friction is not present in nature.
Reason: The airplane shape is streamlined to reduce the effort of frictional force.
