1. The foot of an elephant has an area of 275 cm2.
If the mass of the elephant is 2200 kg. Find the pressure exerted by the
elephant on the ground. (g= 10 m/s2)
A) 2
x 105 Pa
B) 4
x 105 Pa
C) 6
x 105 Pa
D) 8
x 105 Pa
2. A driver accelerates his car at the rate of 1.8
m/s2 and the at the rate of 1.2 m/s2. The ratio of the two forces exerted by
the engine in the two cases will be
A) 1:2
B) 2:1
C) 2:3
D) 3:2
3.
One Pascal is the pressure generated by :
A) Force of 1 N on 1 m2
B) force of 1 kgf on 1 m2
C) Force of 1 N on 1000 cm2
D) force of 1 N on 1 cm2
4. Gravitational force is a :
A) contact force
B) consequential force
C) action-at-a-distance force
D) none of these
5. Burning of a meteor in the atmosphere is due to :
A) electrostatic force
B) magnetic force
C) frictional force
D) gravitational force
6. A boy of mass 50 kg runs with a force of 100 N,
his acceleration would be
A)
5000 m s-2
B)
50 m s-2
C)
150 m s-2
D)
2 m s-2
7. If two forces of 20 N towards north and 12 N
towards south are acting on an object. resultant force will be
A)
32 N toward north
B)
20 N towards north
C)
32 N towards south
D)
8 N towards north
8. Exertion of pull or push on an object is termed
as
A)
energy
B)
work done
C)
force
D)
acceleration
9. If two forces of 10 N and 5 N are acting on an
object in a same direction, what will be total force acting on object?
A)
10 N
B)
15 N
C)
50 N
D)
5 N
10. A box of candies weighs 40 N. If acceleration due
to gravity = 10 m s-2, mass of this box equals
A)
0.4 kg
B)
4 kg
C)
40 kg
D)
None of above
11. If an apple is hanging on a tree, downward force
would be weight and upward force would be
A)
Friction
B)
Weight
C)
Tension
D)
resistance
12. Two forces of magnitude 5 N and 10 N act on a
wooden block of mass 2 kg. If 5 N force acts towards right and 10 N force acts
towards left, which of following statements is correct?
A)
Resultant force is 15 N towards left
B)
Resultant force is 15 N towards right
C)
Resultant force is 5 N towards right
D)
Resultant force is 5N towards left
13. A truck pulls a car with a force of 50 N with
acceleration of 5 m s-2. mass of car would be
A)
45 kg
B)
10 kg
C)
250 kg
D)
55 kg
14. Force has :
A) only magnitude
B) only direction
C) both magnitude and direction
D) neither magnitude nor direction
15. The SI unit of force is :
A) joule
B) kg/m2
C) newton
D) pascal
16. A man pulls a box of mass 12 kg with a force of
72 N. acceleration of box is
A)
6 m s-2
B)
60 m s-2
C)
84 m s-2
D)
864 m s-2
17. Formula of force is
A)
F = P/A, where P is pressure and A is
area
B)
F = ms, where m is mass and s is speed
C)
F = ma, where m is mass and a is
acceleration
D)
F = m/v, where m is mass and v is
velocity
18. Magnetic force causes :
A) attraction only
B) repulsion only
C) both attraction and repulsion
D) none of these
19. The magnetic force is a :
A) contact force
B) force at distance
C) consequential force
D) none of these
20. 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
21. 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 chapatti
B)
Pressing a rubber ball kept on table
C)
Making model using clay
D) All
of the above
22. If In a
tug-o-war, two teams pulling a 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
23. 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
24. A net force F acts on a mass m and produces an
acceleration a. What acceleration results if a net force 2F acts on mass 4m?
A) a/2
B) 8a
C) 4a
D) 2a
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