ECAT Pre Computer Science Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 7 Oscillations

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ECAT Physics Chapter 7 Oscillations

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Question # 1

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

Question # 2

The graph showing the variation of displacement with time is a

Question # 3

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

Question # 4

The unit of spring constant is

Question # 5

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

Question # 6

Hertz is unit of:

Question # 7

A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:

Question # 8

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

Question # 9

In vibrational motion(SHM)

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Amplitude in SHM is equivalent to ______ in circular motion

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 A body with frequency would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
3 The unit of spring constant is
A. J-sec
B. Metre
C. Nm-1
D. None of these
4 If time period of a pendulum is doubled by increasing its length, then its frequency will
A. Also be doubled
B. Become half
C. Become one fourth
D. Becomes four times
5 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
6 Amplitude in SHM is equivalent to ______ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these
7 When quarter of a cycle is completed, the phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
8 An oscillating body oscillates due to:
A. Applied force
B. Restoring force
C. Frictional force
D. None of these
9 Second's pendulum is the pendulum whose time period is:
A. 1 second
B. 2 second
C. 3 second
D. None of these
10 The restoring force is ______ amd 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

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