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

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 # 2

An oscillating body oscillates due to:

Question # 3

Velocity of particle executing SHM will be maximum at

Question # 4

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

Question # 5

A body with frequency of would complete one vibration in:

Question # 6

A body with frequency would complete one vibration in:

Question # 7

The unit of spring constant is:

Question # 8

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

Question # 9

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

Question # 10

Which of the following forces is responsible for SHM

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

A particle moving uniformly along circle its projection along diameter performs

Question # 15

Amplitude in SHM is equivalent to ______ in circular motion:

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ECAT Chapter 7 Important MCQ's

Sr.# Question Answer
1 The S.I unit of frequency is
A. Vibrations s-2
B. Ms-1
C. Hertz
D. s-1
2 The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.
A. f
B. 2 f
C. 3 f
D. 1/2 f
3 If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:
A. K/2
B. 2 K
C. 4 K
D. None of these
4 The graph showing the variation of displacement with time is a:
A. Sine curve
B. Straight line
C. Parabola
D. None of these
5 Free oscillations are always produced by:
A. An applied force
B. Gravitational force
C. Restoring force and inertia
D. Inertia only
6 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:
A. 4 gms
B. 0.4 gms
C. 40 gms
D. None of these
7 The restoring force is always directed towards:
A. Rest position
B. Equilibrium position
C. Mean position
D. All of them
8 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
9 An object undergoes SHM. Its maximum equilibrium positions:
A. Maximum
B. Half of its maximum value
C. Zero
D. None
10 The displacement of body executing SHM is
A. xocoswt
B. xosinwt
C. xosin2wt
D. Both A, B

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