VIII-Physics

A batsman hits a cricket ball which then rolls on the ground and after covering a short distance it comes to rest. The ball stops due to

magnetic force

frictional force

gravitational force

Muscular force

When two forces applied on an object are equal and opposite, then these forces:

May move the object

May stop a moving object

May move the object and also cause a change in its shape

do not move the object but may cause a change in its shape

When two unbalanced forces act on a body, in opposite directions, the net force is equal to:

The sum of the forces

Zero

Difference between two forces and along the larger force

Difference between two forces and along the smaller force

Nails have pointed end because:

Decrease in the force exerted by them

Decrease in the area increases the pressure

Increase in the force

Increase in the area decreases pressure

Which of the following is an example of contact force?

Magnetic

Muscular

Electric

Gravitational

Fruits falling from trees is an example of:

Gravitational force

Magnetic Force

Muscular Force

Electric Force

High Rise buildings have narrow base

True

False

At least two objects must interact for a force to come into action

True

False

The atmosphere exerts pressure at all points and objects on earth

True

False

A force has to be specified both in terms of its magnitude and direction

True

False

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