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PHYSICS

Physics
Frictional force acts in

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

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

Gravitational force
Vanderwalls force
Frictional force
Covalant force

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Physics
Vehicle tyres are inflated properly

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

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

Smoothness
Densities
Gaps
Irregularities

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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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