ECAT Pre Computer Science Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 7 Oscillations

Try The 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 SI unit of spring constant is identical with that of

Question # 2

A body with frequency would complete one vibration in:

Question # 3

Acceleration of body executing SHM is always directed towards

Question # 4

Vibratory motion is always under

Question # 5

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:

Question # 6

The time taken to complete one vibration is called:

Question # 7

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

Question # 8

The SI unit of spring constant is identical with that of:

Question # 9

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

Question # 10

Amplitude is the displacement of the vibrating body from:

Question # 11

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

Question # 12

Free oscillations are always produced by:

Question # 13

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Distance covered during one vibration of an oscillating body in terms of amplitude A is:
A. A
B. 2 A
C. 3 A
D. 4 A
4 The restoring force is ______ amd 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
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 graph showing the variation of displacement with time is a:
A. Sine curve
B. Straight line
C. Parabola
D. None of these
7 A particle executes SHM with frequency. The frequency with which its K.E oscillates is
A. f/2
B. 2f
C. f
D. 4f
8 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
9 The body oscillates due to ______ accelerates and overshoots the rest position due to _______
A. Applied force, Inertia
B. Restoring force, Friction
C. Frictional force, Inertia
D. Restoring force, Inertia
10 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

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