# Top 9th Class Physics Subject Mcqs Pdf Download Chapter 2

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# KINAMATICS

Encircle the most appropriate answer from the following options

1.         Study of motion of the bodies is known as:

(a) Heat

(b) Light

(c) Atomic physics

(d) Mechanics

2.         Study of motion without discussing the cause of motion is known as :

(a) Kinematics

(b) Dynamics

(c) Heat

(d) Motion

3.         If a body does unchanges its position with respect to some observer then it will be in a state of:

(a) Rest

(b) Motion

(c) Uniform motion

(d) Relative motion

4.         If a body changes its position with respect to some observer then it will be in the state of:

(a) Rest

(b) Motion

(c) Uniform motion

(d) Relative motion

5.         Rest and motion are the  states of:

(a) Absolute

(b) Constant

(c) Variable

(d) Relative

6.         Which is the following is a vector quantity?

(a) Displacement

(b) Speed

(c) Volume

(d) Work

7.         The spinning motion of a body about its axis is known as.

(a) Translatory motion

(b) Vibratory motion

(c) Rotatory motion

(d) none of these

8.         When a body moves to and fro about a point and repeats its motion again and again about the same point then this motion is known as:

(a) Translatory

(b) Vibratory

(c) Rotatory

(d) none of these

9.         The motion of the string of a violin is:

(a) Translatory

(b) Vibratory

(c) Rotatory

(d) none of these

10.       Total length of a path between two points is known as:

(a) Velocity

(b) Acceleration

(c) Speed

(d) Distance

11.       The shortest distance between two points is known as:

(a) Velocity

(b) Displacement

(c) Speed

(d) Distance

12.       The area uner a speed time graph respresents

(a) Speed

(b) Volume

(c) Acceleration

(d) Distance

13.       SI unit of speed is:

(a) ms 1

(b) mh -1

(C) kms 1

(d) All of these

14.       Speed is a

(a) Vector

(b) Scalar

(c) Both

(d) none of these

15.       If a body covers equal distance in equal intervals of time, however small the intervals may be, then the speed of the body is known as:

(a) Uniform

(b) Variable

(c) Non uniform

(d) All of these

16.       The rate of displacement with respect to time is known as:

(a) Distance

(b) Speed

(c) Velocity

(d) Acceleration

17.       If the speed and direction of the moving body does not change with time then its velocity is said to be:

(a) Uniform

(b) Variable

(c) Constant

(d) All of these

18.       If the speed or direction of the moving body changes with time then its velocity is said to be:

(a) Uniform

(b) Variable

(c) Constant

(d) All of these

19.       Rate of change of velocity is called:

(a) Distance

(b) Speed

(c) Velocity

(d) Acceleration

20.       If the velocity of the body is increasing then it’s acceleration will be:

(a) Positive

(b) Negative

(c) Uniform

(d) Variable

21.       If the velocity of the body is decreasing then its acceleration will be:

(a) Positive

(b) Negative

(c) Uniform

(d) Variable

22.       If the velocity of a body is uniform then what will be its acceleration :

(a) Positive

(b) Negative

(c) Zero

(d) Doubled

23.       SI unit of acceleration is:

(a) ms 1

(b) kmh-1

(c) kms1

(d) ms2               \

24.       If velocity of a body changes equally in equal intervals of time then its acceleration will be:

(a) Uniform

(b) Variable

(c) Constant

(d) Relative

25.       If the velocity and acceleration of a body moving with uniform speed in a circular path will be:

(a) In the same direction

(b) In the opposite direction

(c) Mutually perpendicular

(d) Equal

26.       If the direction of motion of body and acceleration is in same direction then acceleration will be:

(a) Uniform

(b) Positive

(c) Negative

(d) Zero

27.       If the direction of motion of body and acceleration is in opposite direction then acceleration will be:

(a) Uniform

(b) Positive

(c) Negative

(d) Zero

28.       The quantity which can be described by a number, with suitable unit only is named as:

(a) Vector

(b) Scalar

(c) Speed

(d) Acceleration

29.       The quantity which are described by magnitude as well as direction is known as :

(a) Vector

(b) Scalar

(c) Speed

(d) Acceleration

30.       In equations of motion, motion will always be taken along    line:

(a) Circular

(b) Straight

(c) Elliptical

(d) None of above

31.       In the equation of motion, Acceleration will always be:

(a) Uniform

(b) Variable

(c) Positive

(d) Negative

32.       In equations of motion, initial velocity will be taken as:

(a) Uniform

(b) Variable

(c) Positive

(d) Negative

33.       In equations of motion, quantities in the direction of initial velocity are taken as:

(a) Uniform

(b) Variable

(c) Positive

(d) Negative

34.       In equations of motion, quantities opposite to the direction of initial velocity are known as:

(a) Uniform

(b) Variable

(c) Positive

(d) Negative

35.       The slope of straight line in speed time graph gives the magnitude of

(a) Force

(b) Displacement

(c) Torque

(d) Acceleration

36.       Series of experiments on free fall of heavy bodies was done by:

(a) Newton

(b) Einstein

(c) Galileo

(d) Al-Kundi

37.       When a body is falling freely under the gravity then in equations of motion ‘a’ is replaced by which :

(a) m

(b) d

(c) S

(d) g

38.       If a body is falling under the gravity then its initial velocity will be:

(a) Positive

(b) Negative

(c) uniform

(d) Zero

39.       If a body is falling under the gravity then what will its gravitational acceleration:

(a) Positive

(b) Negative

(c) Increasing

(d) Zero

40.       If a body is thrown vertically upward then its final velocity will be:

(a) Positive

(b) Negative

(c) uniform

(d) Zero

41.       If a body is thrown upward, then its gravitational acceleration will be:

(a) Positive

(b) Negative

(c) Increasing

(d) Zero

42.       A ball is dropped from the highest of the tower. the space covered by it within the first second is:

(a) 100m

(b) 10m

(c) 50m

(d) 5m

43.       If a car is moving with uniform speed in a circle then its velocity will be:

(a) Uniform

(b) Variable

(c) Zero

(d) None of the above

44.          There are equations of motion which are wont to solve the issues about the motion of bodies:

(a) 1

(b) 2

(c) 3

(d) 4

45.     An object has translatory motion if it moves along a:

(a) Straight line

(b) circle

(c) line without rotation

(d) Curved path

46.     The motion around an axis of a body is known as which motion?

(a) Circular

(b) Rotatory

(c) Vibratory

(d) Random

47.       Which among the following is a vector quantity?

(a) Speed

(b) distance

(c) Displacement

(d) power

5ms”

48.         By dividing displacement of a moving object with time, we will obtain:

(a) Speed

(b) Acceleration

(c) Velocity

(d) Deceleration

49.        A change in position is called:

(a) Speed

(b) Velocity

(c) Displacement

(d) Distance

50.       A train is moving at a speed of 36kmh”. Its speed expressed in ms is:

(a) 10 ms-1

(b) 25 ms-1

(c) 20 ms -1

(d) 30 ms-1

51.      A ball is thrown vertically upward, its velocity at the highest point is:

(a) -10mS-¹

(b) 10mS-¹

(c) Zero

(d) 100mS-¹

#### 52.     The motion of a body about an axis is called_____________.

(a) Circular Motion

(b) Vibratory Motion

(c) Rotational Motion

(d) Random Motion

#### 53.     The motion of a body in a straight line is ________.

(a) Random motion

(b) Circular motion

(c) Linear motion

(d) Translatory motion

#### 54.    . A type of motion in which a body moves about its own axis is called:

(a) Vibratory motion

(b) Rotatory Motion

(c) Circular Motion

(d) Random Motion

(a) 10ms-¹

(b) 20ms-¹

(c) 25ms-¹

(d) 30ms-¹

#### 56.       Brownian motion is an example of:

(a) Random motion

(b) Linear motion

(c)Circular motion

(d)Vibratory motion

(a) Speed

(b) Velocity

(c) Displacement

(d) Distance

(a) 3

(b) 1

(c) 2

(d) 4

(c) 2

#### 58.       The motion of insects is called:

(a) random motion

(b) circular motion

(c) rotatory motion

(d) vibratory motion

#### 59.     The to and fro motion of a body about its mean position is called:

(a) Rotatory motion

(b) Random motion

(c) Vibratory motion

(d) Circular motion