fill in the blanks.

Question 11 Mark

The force of friction acting between two bodies in contact while at rest is known as ………….. friction.

Answer

The force of friction acting between two bodies in contact

Question 21 Mark

Weight remaining the same, friction is independent of …………… of surface in contact.

Answer

Weight remaining the same, friction is independent bf area of surface in contact.

Question 31 Mark

Rolling friction offers ………….. resistance than sliding friction.

Answer

Rolling friction offers less resistance than sliding friction.

Question 41 Mark

More the roughness of a surface, greater is the ……………

Answer

More the roughness of a surface, greater is the friction.

Question 51 Mark

Bicycles use ………….. to reduce friction between the pedals and the crank.

Answer

Bicycles use ball bearings to reduce friction between the pedals and the crank.

Question 61 Mark

Friction is a type of …………..

Answer

Friction is a type of contact force.

Question 71 Mark

Friction depends upon the …………. of an object.

Answer

Friction depends upon the weight of an object.

Question 81 Mark

Smoother the surface, ………….. is the frictional force offered by it.

Answer

Smoother the surface, lesser is the frictional force offered by it. .

Question 91 Mark

Rolling friction is …………… than sliding friction.

Answer

Rolling friction is less than sliding friction.

PHYSICS fill in the blanks.