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

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

Question # 2

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

Question # 3

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

Question # 4

The unit of spring constant is:

Question # 5

Velocity of particle executing SHM will be maximum at

Question # 6

When a body is vibrating, the displacement from mean position:

Question # 7

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

Question # 8

The S.I unit of frequency is

Question # 9

Which one of the following is an example of SHM:

Question # 10

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

Question # 11

Amplitude in SHM is equivalent to ______ in circular motion:

Question # 12

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

Question # 13

SHM is type of ______ motion

Question # 14

A body with frequency would complete one vibration in:

Question # 15

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Amplitude in SHM is equivalent to_____ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these
2 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
3 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
4 An oscillating body oscillates due to:
A. Applied force
B. Restoring force
C. Frictional force
D. None of these
5 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
6 The S.I unit of frequency is
A. Vibrations s-2
B. Ms-1
C. Hertz
D. s-1
7 When a body is vibrating, the displacement from mean position:
A. Increases with time
B. Decreases with time
C. Changes with time
D. None of these
8 Amplitude in SHM is equivalent to ______ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these
9 If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:
A. 3 K
B. 2 K
C. K/4
D. K/3
10 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

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