ECAT Pre Engineering Physics Chapter 7 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 7 Oscillations

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 7 Oscillations

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Physics ECAT Pre Engineering Chapter 7 Oscillations

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Question # 1

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

Question # 2

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 # 3

The number of vibration in two seconds can be expressed as
______ of frequency of vibration is f:

Question # 4

Amplitude is the displacement of the vibrating body from:

Question # 5

The acceleration of body executing SHM is directly proportional to

Question # 6

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

Question # 7

Which one of the following is an example of SHM:

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

The unit of spring constant is:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 The acceleration of body executing SHM is directly proportional to
A. Applied force
B. Amplitude
C. Displacement
D. Frictional force
3 When quarter of a circle is completed, phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
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 A body with frequency would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
6 If a mass of 10 gm is suspended from a spring of k = 9.8 Nm-1, then the extension will be:
A. 1 cm
B. 1 m
C. 10 mm
D. None of these
7 The S.I unit of frequency is
A. Vibrations s-2
B. Ms-1
C. Hertz
D. s-1
8 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
9 In SHM, there is always a constant ratio between displacement if body and its:
A. Velocity
B. Period
C. Mass
D. Acceleration
10 The maximum distance of body from mean position when body is executing SHM is called
A. Time period
B. Displacement
C. Amplitude
D. Frequency

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