#### very important multiple choice question

10th Standard

Reg.No. :
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Science

Use blue pen only
Time : 00:20:00 Hrs
Total Marks : 20

Part - A

20 x 1 = 20
1. Inertia of a body depends on

(a)

weight of the object

(b)

acceleration due to gravity of the planet

(c)

mass of the object

(d)

Both a & b

2. Impulse is equals to

(a)

rate of change of momentum

(b)

rate of force and time

(c)

change of momentum

(d)

rate of change of mass

3. Newton’s III law is applicable

(a)

for a body is at rest

(b)

for a body in motion

(c)

both a & b

(d)

only for bodies with equal masses

4. Plotting a graph for momentum on the X-axis and time on Y-axis. slope of momentum- time graph gives

(a)

Impulsive force

(b)

Acceleration

(c)

Force

(d)

Rate of force

5. In which of the following sport the turning of effect of force used

(a)

swimming

(b)

tennis

(c)

cycling

(d)

hockey

6. The unit of ‘g’ is m s-2. It can be also expressed as

(a)

cm s-1

(b)

N kg-1

(c)

N m2 kg-1

(d)

cm2 s-2

7. One kilogram force equals to

(a)

9.8 dyne

(b)

9.8 × 104 N

(c)

98 × 104 dyne

(d)

980 dyne

8. The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be____kg

(a)

4 M

(b)

2 M

(c)

M/4

(d)

M

9. If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of a body on the Earth will

(a)

decrease by 50%

(b)

increase by 50%

(c)

decrease by 25%

(d)

increase by 300%

10. To project the rockets which of the following principle(s) is /(are) required?

(a)

Newton’s third law of motion

(b)

Newton’s law of gravitation

(c)

law of conservation of linear momentum

(d)

both a and c

11. Physics that deals with the effect of force on bodies is

(a)

Kinematics

(b)

Dynamics

(c)

Statics

(d)

Mechanics

12. ______ deals with the bodies which are at rest under the action of forces.

(a)

Statics

(b)

Kinematics

(c)

Dynamics

(d)

Mechanics

13. Study of moving bodies under the action of forces ______

(a)

Statics

(b)

Kinematics

(c)

Dynamics

(d)

Mechanics

14. The resistance of a body to change its state of rest is called

(a)

inertia of rest

(b)

inertia of motion

(c)

momentum

(d)

inertia of direction

15. The resistance of a body to change its state of motion is called

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

16. The resistance of a body to change its direction of motion is

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

17. Mixing sugar in a glass of milk using a spoon is ______

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

18. The act of cleaning a carpet by heating it with a stick is an example for inertia of

(a)

motion

(b)

direction

(c)

rest

(d)

momentum

19. A luggage is usually tied with a rope on the roof of the buses due to

(a)

inertia of motion

(b)

inertia of direction

(c)

inertia of rest

(d)

momentum

20. The momentum of a heavy object at rest will be

(a)

large

(b)

infinity

(c)

zero

(d)

small