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 always directed towards:

Question # 2

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 # 3

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

Question # 4

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

Question # 5

The SI unit of spring constant is identical with that of

Question # 6

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

Question # 7

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

Question # 8

When a body is vibrating, the displacement from mean position

Question # 9

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

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 of would complete one vibration in:

Question # 12

Amplitude in SHM is equivalent to_____ in circular motion:

Question # 13

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

Question # 14

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

Question # 15

An oscillating body oscillates due to:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Velocity of particle executing SHM will be maximum at
A. Extreme position
B. Mean position
C. b/w mean and extreme
D. None
2 When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:
A. Increases
B. Decreases
C. Remains constant
D. None of these
3 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:
A. 4 gms
B. 0.4 gm
C. 40 gms
D. None of these
4 The acceleration of body executing SHM is directly proportional to
A. Applied force
B. Amplitude
C. Displacement
D. Frictional force
5 Free oscillations are always produced by:
A. An applied force
B. Gravitational force
C. Restoring force and inertia
D. Inertia only
6 In SHM, there is always a constant ratio between displacement if body and its:
A. Velocity
B. Period
C. Mass
D. Acceleration
7 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
8 The maximum distance of body from mean position when body is executing SHM is called
A. Time period
B. Displacement
C. Amplitude
D. Frequency
9 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
10 The restoring force is ______ and opposite tot he 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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