Question

EXERCISES
A Multiple Choice Questions
Select the correct option
1. The SI unit of force is
(a) pascal
(b) metro
(c) newlon
(d) second
2. Which of the following is non-contact force?
(a) Frictional force (b) Magnetic force
(c) Mechanical force (d) Muscular force
3. A contact force cannot act through
(a) touching
(b) empty space
(c) touching with a metal rod
(d) touching with a wooden rod
4. A force that opposes the motion of one surface sliding over another is called
(a) newton
(b) ball bearing
(c) friction
(d) lubricants
5. A camel aan run/walk in deserts very casily as compared to donkey, horse, dog, etc. because of
(a) its weight is lesser (b) its feet are smaller (e) its feet are broader (d) its heavier body
6. The SI unit of pressure
(a) pascal
(b) newton
(c) ampere
(d) ohm
7. Force applied on a body can change its :
(a) speed only
(b) shape only
(c) direction of motion only (d) all of these
8. When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of
bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The nse of water in the dropper a
due to :
(a) gravity of the earth (b) pressure of water (c) shape of rubber bulb (d) atmosphenc pressure​

Answer 1

Answer:

Explanation:

1.C. NEWTON.

2.B.MAGNETIC FORCE.

3.B.EMPTY SPACE.

4.C. FRICTION.

5.C. ITS FEET ARE BROADER, SO LESS PRESSURE WOULD BE APPLIED.

6.A. PASCAL.

7.D. ALL OF THESE.

8. D. ATMOSPHERIC PRESSURE.