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

Amplitude is the displacement of the vibrating body from:

Question # 2

When a body is vibrating, the displacement from mean position

Question # 3

Which one of the following is an example of SHM

Question # 4

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

Question # 5

The restoring force is always directed towards:

Question # 6

The unit of spring constant is

Question # 7

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

Question # 8

Which one of the following is an example of SHM:

Question # 9

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

Question # 10

The unit of spring constant is:

Question # 11

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

Question # 12

SHM is type of ______ motion

Question # 13

Acceleration of body executing SHM is always directed towards

Question # 14

The SI unit of spring constant is identical with that of

Question # 15

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Free oscillations are always produced by:
A. An applied force
B. Gravitational force
C. Restoring force and inertia
D. Inertia only
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:
A. 4 gms
B. 0.4 gms
C. 40 gms
D. None of these
3 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
4 The maximum distance of body from mean position when body is executing SHM is called
A. Time period
B. Displacement
C. Amplitude
D. Frequency
5 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
6 Amplitude in SHM is equivalent to_____ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these
7 Velocity of particle executing SHM will be maximum at
A. Extreme position
B. Mean position
C. b/w mean and extreme
D. None
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 When quarter of a circle is completed, the phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
10 A body with frequency of would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second

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