Question

EXERCISES
A Maltiple Choice Questions
Select the correct option:
1. The friction thal exists between a surface sliding on another surface, is called the
(a) rolling friction (b) sliding friction (c) stalic friction
(d) None of these
2. Four chuldren were asked to arrange forces due to rolling static and aliding frictions in a decreasing order. Their
arrangements are given below. Choose the correct arrangement.
(a) rolling static, sliding (6) rolling, sliding, stalic (c) static, sliding rolling (d) slidmg, static, rolling
3. Reena runs her toy car on dry marble floor, wel marble floor, newspaper and towel spread on the floor. The force
of friction acting on the car on different surfaces in Increasing order will be
(a) wet marble floor, dry marble floor, newspaper and towel
(b) newspaper, lowel, dry marble loor, wet muble floor
(c) towel, newspaper, dry marble floor, wel marble floor
(d) wet marble floor, dry marble floor, towel, newspaper
4. Ball beanngs are used to
(a) increase friction (b) decrease friction (c) optimize friction (d) All of these
S. The use of lubricants makes the surface
(a) smooth
(b) rough
(c) very rough
(d) none of the​

Answer 1

Answer:

1..b

2.c

check it tooooo.

hope it will be crrect..

Answer 2

Answer:

1.b)sliding friction

4.a)increase friction

5.a)smooth

I don't know the rest