Question

Field is a three dimensional region influenced. If an object is kept at any poin
4.
the region, is influenced by it.
Friction is the force that opposes relative motion of surfaces in contact
5.​

Answer 1

Field is a three dimensional region influencing an object if kept at any point within the specified region.

Yes , this statement is correct.

Reason:

• Field Intensity and Field Potential are two indices upon which an object is influenced when kept within the specified boundaries of the field.

• For example : Electrostatic Field influences any charged particle kept within the boundaries upto infinity.

Friction is a force that opposes the relative motion of surfaces in contact.

Yes, this statement is true.

Reason:

• Friction is a dissipation of force which prevents relative movement between the surfaces in contact with one another.

• Friction is developed between surfaces due to electromagnetic interaction between the particles of the two surfaces.

• Upto a critical point, friction prevents any relative movement (this is known as static friction). After relative movement, the friction is known as kinetic friction.

Hence, Both statements are correct.