ECAT Pre General Science Physics Chapter 7 MCQ Test With Answer

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

Try The 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

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

Question # 2

The SI unit of spring constant is identical with that of

Question # 3

The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.

Question # 4

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

Question # 5

A particle moving uniformly along circle its projection along diameter performs

Question # 6

If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:

Question # 7

Free oscillations are always produced by:

Question # 8

Amplitude in SHM is equivalent to ______ in circular motion:

Question # 9

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

Question # 10

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

Question # 11

If time period of a pendulum is doubled by increasing its length, then its frequency will

Question # 12

An object in SHM will have maximum speed when its displacement from equilibrium position is:

Question # 13

Which one of the following is an example of SHM

Question # 14

The string of a simple pendulum should be:

Question # 15

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

Question # 16

When a body is vibrating, the displacement from mean position

Question # 17

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

Question # 18

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

Question # 19

Which of the following forces is responsible for SHM

Question # 20

The SI unit of spring constant is identical with that of:

Question # 21

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

Question # 22

Amplitude is the displacement of the vibrating body from:

Question # 23

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 # 24

If a mass of 10 gm is suspended from a spring of k = 9.8 Nm-1, then the extension will be:

Question # 25

Hertz is unit of:

Question # 26

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

Question # 27

An oscillating body oscillates due to:

Question # 28

The graph showing the variation of displacement with time is a

Question # 29

A body with frequency of would complete one vibration in:

Question # 30

Amplitude in SHM is equivalent to_____ in circular motion:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Hertz is unit of:
A. Time period
B. Displacement
C. Amplitude
D. Frequency
4 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
5 Amplitude in SHM is equivalent to ______ in circular motion
A. Diameter
B. Radius
C. Circumference
D. None of these
6 If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:
A. 3 K
B. 2 K
C. K/4
D. K/3
7 To and fro motion of a body is about its mean position is known as:
A. Translatory motion
B. Vibratory motion
C. Rotatory motion
D. None of these
8 If a force of 0.05 N produces an elongation of 20 mm in 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
9 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
10 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

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