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Tick the most appropriate answer.
Friction produces
Concept: undefined >> undefined
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Concept: undefined >> undefined
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Fill in the blank
Rolling friction is ............. than sliding friction.
Concept: undefined >> undefined
Fill in the blank.
Rolling friction is ........... than sliding friction.
Concept: undefined >> undefined
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Smoother the surface, ................. is the frictional force offered by it.
Concept: undefined >> undefined
Fill in the blank.
Friction depends upon the ............... of an object.
Concept: undefined >> undefined
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Friction is a type of .................
Concept: undefined >> undefined
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
Concept: undefined >> undefined
State if the following statement is true or false. Correct the statement if it is false.
Friction has no relation with our walking or running.
Concept: undefined >> undefined
State if the following statement is true or false. Correct the statement if it is false.
Friction helps us to grip the objects in our hand.
Concept: undefined >> undefined
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.
Concept: undefined >> undefined
What do you mean by ‘rectilinear propagation of light’?
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Describe an experiment to show that light travels in a straight-line path.
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In which of the following two arrangements (a) and (b) shown in the diagram, you can see the light of the bulb? Explain Your answer
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Name a simple application of the rectilinear propagation of light
Concept: undefined >> undefined
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
Concept: undefined >> undefined
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.
Concept: undefined >> undefined
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Concept: undefined >> undefined
Answer the following in short.
When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.
Concept: undefined >> undefined
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Concept: undefined >> undefined
