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Subject :NSO    Class : Class 6

In which of the following cases, the frictional force between the tyres of a car and the road increases?

AWhen the road is wet.
BWhen the speed of the car increases.
CWhen the surface area of the tyres in contact with the road increases.
DWhen there are more passengers in the car.

answer is c as area in contact is more

Ans 1:

Class : Class 10

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6

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