ECAT Pre General Science Physics Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 7 Oscillations

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ECAT Pre General Science Physics Chapter 7 Oscillations

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Question # 1

In SHM, the acceleration is ______ when velocity is _____:

Question # 2

The restoring force is ______ and opposite tot he applied force within ______

Question # 3

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

Question # 4

To and fro motion of a body is about its mean position is known as:

Question # 5

A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:

Question # 6

Which of the following is an example of SHM(in ideal situations)

Question # 7

When quarter of a cycle is completed, the phase of vibration is:

Question # 8

Which one of the following is an example of SHM:

Question # 9

A spring of constant k = 0.4 N m-1is to be extended through 10 cm at a place where g = 10 m sec-2. The mass to be suspended should be:

Question # 10

When quarter of a circle is completed, phase of vibration is:

Question # 11

The body oscillates due to ______ accelerates and overshoots the rest position due to _______

Question # 12

When a body is vibrating, the displacement from mean position

Question # 13

A particle moving uniformly along circle its projection along diameter performs

Question # 14

If mass of 10 gm is suspended from a spring of K=0.8 Nm-1then the extension will be:

Question # 15

SHM is type of ______ motion

Question # 16

A spring of constant k = 0.4 N m-1is to be extended thorugh 10 cm at a place where g = 10 m sec-2. The mass to be suspended should be:

Question # 17

A body with frequency of would complete one vibration in:

Question # 18

Which of the following quantity for particle executing SHM is non-zero at mean position

Question # 19

If a force of 0.05 N produces an elongation of 20 mm in string, then its spring constant will be:

Question # 20

The restoring force is _____ and opposite to the applied force within ______,:

Question # 21

An oscillating body oscillates due to:

Question # 22

The graph showing the variation of displacement with time is a:

Question # 23

The unit of spring constant is

Question # 24

Second's pendulum is the pendulum whose time period is:

Question # 25

The SI unit of spring constant is identical with that of

Question # 26

In SHM, there is always a constant ratio between displacement if body and its:

Question # 27

A body with frequency would complete one vibration in:

Question # 28

When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:

Question # 29

The restoring force is always directed towards:

Question # 30

When quarter of a circle is completed, the phase of vibration is:

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Sr.# Question Answer
1 When quarter of a circle is completed, the phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
2 Which one of the following is an example of SHM
A. Motion in a plane
B. Motion in a swing
C. Motion in a car
D. None of these
3 If mass of 10 gm is suspended from a spring of K=0.8 Nm-1then the extension will be:
A. 10 cm
B. 1 m
C. 10 mn
D. None of these
4 The number of vibration in two seconds can be expressed as
______ of frequency of vibration is f:
A. f
B. 2 f
C. 3 f
D. 1/2 f
5 The acceleration of body executing SHM is directly proportional to
A. Applied force
B. Amplitude
C. Displacement
D. Frictional force
6 Second's pendulum is the pendulum whose time period is:
A. 1 second
B. 2 second
C. 3 second
D. None of these
7 When quarter of a circle is completed, phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
8 If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:
A. 2500 MHz
B. 0.25 MHz
C. 2500 KHz
D. None of these
9 A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:
A. Circular motion, circumference
B. Vibrator, chord
C. SHM, diameter
D. SHM, circumference
10 The wave form of SHM is
A. Pulsed wave
B. Square wave
C. Triangular waved
D. Sine wave
11 SHM is type of ______ motion
A. Vibratory
B. Linear
C. Circular
D. None
12 The SI unit of spring constant is identical with that of
A. Force
B. Surface tension
C. Pressure
D. Loudness
13 A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:
A. 1.5 sec
B. 2.0 sec
C. 2.3 sec
D. 2.5 sec
14 An object undergoes SHM. Its maximum equilibrium positions:
A. Maximum
B. Half of its maximum value
C. Zero
D. None
15 Distance covered during one vibration of an oscillating body in terms of amplitude A is:
A. A
B. 2 A
C. 3 A
D. 4 A
16 If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:
A. 250 N m-1
B. 25 N m-1
C. 2.5 N m-1
D. None of these
17 The body oscillates due to _____ accelerates and overshoots the rest position due to______,:
A. Applied force, inertial
B. Restoring force, friction
C. Frictional force, inertial
D. Restoring force, inertial
18 Which of the following quantity for particle executing SHM is non-zero at mean position
A. Force
B. Acceleration
C. Velocity
D. Displacement
19 The S.I unit of frequency is
A. Vibrations s-2
B. Ms-1
C. Hertz
D. s-1
20 A body with frequency of would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
21 The restoring force is _____ and opposite to the applied force within ______,:
A. Equal, elastic limit
B. Different, the walls of the laboratory
C. Different, elastic limit
D. None of these
22 An angle of 180° in circular motion is equivalent to ______ in SHM.
A. Half the vibration
B. One vibration
C. 3/4th of a vibration
D. None of these
23 The unit of spring constant is
A. J-sec
B. Metre
C. Nm-1
D. None of these
24 The body oscillates due to ______ accelerates and overshoots the rest position due to _______
A. Applied force, Inertia
B. Restoring force, Friction
C. Frictional force, Inertia
D. Restoring force, Inertia
25 In vibrational motion(SHM)
A. P.E remains conserved
B. Average K.E remain constant
C. Neither P.E nor K.E remains constant
D. Total energy remains constant
26 The time taken to complete one vibration is called:
A. Frequency
B. Amplitude
C. Time
D. Time period
27 To and from motion of a body about its mean position is known as:
A. Translatory motion
B. Vibratory motion
C. Rotatory motion
D. None of these
28 A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:
A. Circular motion, circumference
B. Vibratory, chord
C. SHM, diameter
D. SHM, circumference
29 An object in SHM will have maximum speed when its displacement from equilibrium position is:
A. Infinity
B. Maximum
C. Zero
D. Minimum
30 The string of a simple pendulum should be:
A. Heavy
B. Extensible
C. In-extensible
D. None of these

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