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 vibrational motion(SHM)

Question # 2

Free oscillations are always produced by:

Question # 3

If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:

Question # 4

Hertz is unit of:

Question # 5

The restoring force is always directed towards:

Question # 6

If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:

Question # 7

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

Question # 8

A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:

Question # 9

An angle of 180° in circular motion is equivalent to ______ in SHM.

Question # 10

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

Question # 11

A body with frequency would complete one vibration in:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

The time taken to complete one vibration is called:

Question # 17

SHM is type of ______ motion

Question # 18

The displacement of body executing SHM is

Question # 19

The wave form of SHM is

Question # 20

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 # 21

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 # 22

When a body is vibrating, the displacement from mean position

Question # 23

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

Question # 24

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

Question # 25

Which of the following forces is responsible for SHM

Question # 26

Vibratory motion is always under

Question # 27

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

Question # 28

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

Question # 29

Amplitude is the displacement of the vibrating body from:

Question # 30

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 A body with frequency would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
2 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
3 Which of the following is an example of SHM(in ideal situations)
A. Motion of simple pendulum
B. Motion of horizontal spring man system
C. Motion of violin string
D. All of these
4 The time taken to complete one vibration is called:
A. Frequency
B. Amplitude
C. Time
D. Time period
5 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
6 Hertz is unit of:
A. Time period
B. Displacement
C. Amplitude
D. Frequency
7 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
8 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
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 Amplitude in SHM is equivalent to_____ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these

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