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8Class Force Full Lesson

Total questions: 50

Worksheet time: 20mins

Name
Class
Date
1.
A ball rolling on the ground slows down and finally stops. This is because of
a)
Force
b)
Less force applied
c)
Friction
d)
None of the above
2.
A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus
a)
Changes the direction & speed of the ball
b)
Does not change the direction but speed only
c)
Does not change the speed but direction only
d)
Does not change either direction or speed
3.

A book on a table is at rest. Then the magnitude of the which force is zero?

a)
Normal
b)
frictional
c)
gravitational
d)
none of these
4.

A monkey hangs stationary at the end of the vertical vine. The forces acting on the monkey is/are

a)
gravitational and normal
b)
gravitational and friction
c)
gravitational and tension
d)
gravitational ,friction and tension
5.

A person is pulling water from well. Which type of force he is using?

a)
Muscular force
b)
magnetic force
c)
Friction force
d)
Electrostatic force
6.
A push or pull is called
a)
Friction
b)
pressure
c)
force
d)
none of these
7.
A situation for effect of force leads to a permanent change in shape of object is
a)
Stretching a rubber band
b)
Squzeeing sponge
c)
Spring
d)
breaking glass
8.
An apple is falling from a tree. The forces acting on it.
a)
drag
b)

gravitational force

c)

Drag and gravitational forces

d)

No Answer

9.
An example of a non- contact force is
a)
Force exerted by us to lift a bucket
b)
Push a stationary car
c)
Force exerted by magnet
d)
Hit a cricket ball for a 6 run
10.

Comb your dry hair, bring the comb near small pieces of paper. Force you observed is

a)
magnetic force
b)
electrostatic force
c)
gravitatinal force
d)
normal force
11.

Direction and magnitude of force on an object are fixed for

a)
normal force
b)
frictional force
c)
tension force
d)
gravitational force due to earth
12.

For the body at the rest, the net force is

a)

m X a

b)
not equal to zero
c)
zero
d)
none of these
13.
Force has …….as well as………
a)
mass,weight
b)

magnitude and direction

c)

mass and action

d)

action and reaction

14.

Force of friction always acts on moving objects and it is ____

a)
On any direction
b)
Along the direction of motion
c)
Perpendicular to the direction of motion
d)
Opposite to the direction of motion
15.
Gravity is
a)
Repulsive
b)
Attraction + Repulsive force
c)
Attractive force
d)
Not a force
16.
Hoisting a flag is related to
a)
push
b)
pull
c)
push and pull both
d)
pressure
17.
How can we differentiate 'contact force' and 'field force'?
a)
magnitude
b)
direction
c)
distance of contact
d)
above all
18.

How do you show that force can change the shape of an object

a)
Squeezing a sponze
b)
Squzeeing an iron block with hand
c)
Throwing a ball
d)
Stopping a ball
19.
If two forces act in the opposite directions on an object, the net force acting on it is the
a)
Sum of the two forces
b)
difference between the two forces
c)
Multiplication of the two forces
d)
Division of the two forces
20.

If In a tug of war, when two teams are pulling a rope, and the rope does not move towards any team, it implies that

a)
Equal force is being applied in the same direction
b)
Equal Force is being applied in opposite direction
c)
No force is applied in any direction
d)
Cannot be explained
21.
If the area is decreased, then the value of pressure
a)
Increases
b)
decreases
c)
does not change
d)
none of these
22.
Knife is made with
a)
Less surface area
b)
More surface area
c)
Less surface area of contact
d)
More surface of contact
23.
Like poles of magnet _________each other.
a)
attract
b)
repel
c)

Attract or repel

d)
none of these
24.

Normal force is applicable only when below given force exists

a)
gravitational
b)
frictional
c)
both A and B
d)

No answer

25.

Old age people seek help because they lose their

a)
muscular force
b)
frictional force
c)
graitational force
d)
above all
26.

Play carrom board with your friend. Does the coin move in the same direction in every case?

a)
No
b)
Yes
c)
sometimes
d)
none of these
27.
Pressure depends on …….. And……..
a)

Mass, Force

b)

Mass, Volume

c)

Force, Area

d)

Force, Volume

28.
Pressure=………….
a)
Force
b)
Force/Area
c)
Area/Force
d)
ForcexArea
29.

Take two balloons inflate them. Rub both with your hair. Bring them closer to each other. Then they.

a)
repels
b)
attracts
c)
no change
d)
we cannot say any thing
30.
The apparatus required to find a limiting force of a thread.
a)
Simple balance
b)
Spring balance
c)
Electronic balance
d)
none of these
31.

The diagram showing all the forces acting on object at a particular instant is

a)
Free body diagram
b)
Free fall diagram
c)
Free object diagram
d)
none of these
32.
The force exerted by using our body muscles is
a)
Muscular force
b)
magnetic force
c)
gravitational force
d)
normal force
33.
The force acting in normal direction is
a)
gravitational force
b)
magnetic force
c)
muscular force
d)
normal force
34.
The force acting on unit area of a surface is called
a)
momentum
b)
density
c)
pressure
d)
velocity
35.
The force acts between a charged balloon and piece of papers
a)
magnetic
b)
gravitational
c)
contact
d)
electrostatic
36.
The force exerted by a charged body on another charged or uncharged body is known as
a)
Eloctrostatic force
b)
Friction
c)
Tension
d)
Normal force
37.
The force of attaction between any two objects having mass is
a)
frictional
b)
muscular
c)
gravitational
d)
Magnetic force
38.
The force that a solid surface exerts on any object in the normal direction is caled
a)
Muscular force
b)
Normal force
c)
Tension force
d)
Magnetic force
39.
The resistance to the movement of a body over the surface of another is
a)
force
b)
friction
c)
workdone
d)
energy
40.
The S.I unit of force is
a)
Pascal
b)
Newton
c)
Square Meter
d)
Tesla
41.
The unit of pressure in S.I system is
a)
Newton
b)
Pascal
c)
Ampere
d)
Henry
42.

This forces exists any where in the universe

a)
gravitational force
b)
frictional force
c)
normal force
d)
above all
43.
Unlike poles of magnet __________ each other.
a)
attract
b)
repel
c)
both A and B
d)
none of these
44.
What can a force change?
a)
shape
b)
direction
c)
speed
d)
shape, direction and speed
45.
Which force acts on the suspended body along the string?
a)
friction
b)
Tension
c)
Magnetic force
d)
Muscular force
46.
Which of the following is proper example(s) to explain that force on an object may change its shape
a)
A ball of dough rolled into chapati
b)
Pressing a rubber ball kept on table
c)
Making model using clay
47.
Which one of these Is not a contact force?
a)
Muscular force
b)
Frictional force
c)
normal force
d)
Magnetic force
48.
With the increase in the weight of an object the pressure
a)
Increases
b)
Decreases
c)
Is not affected
d)
none of these
49.

The unit of pressure in SI system is

a)

Meter

b)

Litre

c)

Newton/ sq. Metre

d)

No answer

50.

The unit of pressure in SI system is

a)

Pascal

b)

Newton / sq. Metre

c)

Volts

d)

No answer

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