Question

Match the elements of the List-I to the elements of List-II.

List - I	List - II
a) static friction	e) less friction
b) angle of repose	f) self-adjusting force
c) lubrication	g) non-conservative force
d) frictional force	h) angle of friction

• A. a-f ;b-h;c-e;d-g
• B. a-e;b-g;c-h;d-f
• C. a-g ;b-h;c-e;d-f
• D. a-g ;b-h;c-f ;d-e

Answer 1

Answer: (A)

a-f ;b-h;c-e;d-g

Static friction is a self adjusting friction, as for a stationary body the frictional force depends on the force acted upon it.
Angle of repose is equal to angle of friction.
Lubrication is used to decrease the coefficient of friction.
Frictional force is a non conservative force.