Subject :NSO Class : Class 8
Which one of the following statements is not true?
(A) Friction helps us to twist an object
(B) Friction is a force that opposes motion
(C) Objects have weight because of the frictional force between them and the Earth
(D) More friction is produced between rough surfaces than between smooth surfaces.
a
Ans 1:
Class : Class 8
Answer 'c' is not correct
Ans 2:
Class : Class 7
'C' option as gravitational force act between earth and any object not friction
Ans 3:
Class : Class 7
'C' option as gravitational force act between earth and any object not friction