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PHYSICS

Physics
Frictional force acts in

All the directions
The opposite direction of the motion
The same direction as the motion
Upward direction

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Physics
The force which makes a vehicle to stop when break is applied is called

Frictional force
Vanderwalls force
Gravitational force
Covalant force

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Physics
Vehicle tyres are inflated properly

To avoid skidding and to minimise friction
To go fast and save fuel.
To ensure smooth running.
To allow the vehicle to take more load.

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Physics
Friction is caused by the ________ on the two surfaces in contact.

Irregularities
Smoothness
Densities
Gaps

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Physics
Ball bearings are used in cycles, scooters etc to

Increase the friction between the wheel and the axle
Reduce the friction between the wheel and the axle
None of these
Reduce the friction between ground and the whee

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