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

Free oscillations are always produced by:

Question # 2

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

Question # 3

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

Question # 4

A particle executes SHM with frequency. The frequency with which its K.E oscillates is

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

A particle moving uniformly along circle its projection along diameter performs

Question # 9

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

Question # 10

A body with frequency of would complete one vibration in:

Question # 11

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

Question # 12

The unit of spring constant is

Question # 13

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

Question # 14

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

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 Vibratory motion is always under
A. Applied force
B. Restoring force
C. Periodic force
D. Gravitational force
2 Which of the following quantity for particle executing SHM is non-zero at mean position
A. Force
B. Acceleration
C. Velocity
D. Displacement
3 The displacement of body executing SHM is
A. xocoswt
B. xosinwt
C. xosin2wt
D. Both A, B
4 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
5 In SHM, there is always a constant ratio between displacement if body and its:
A. Velocity
B. Period
C. Mass
D. Acceleration
6 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
7 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
8 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:
A. 1.5 sec
B. 2.0 sec
C. 2.3 sec
D. 2.5 sec
9 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
10 Amplitude is the displacement of the vibrating body from:
A. One extreme position to the other extreme position
B. Mean position any one extreme position
C. Both A and B are correct
D. None of these

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