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 in SHM is equivalent to_____ in circular motion:

Question # 2

In vibrational motion(SHM)

Question # 3

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:

Question # 4

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

Question # 5

In SHM, the acceleration is ______ when velocity is _____:

Question # 6

The unit of spring constant is:

Question # 7

The S.I unit of frequency is

Question # 8

The string of a simple pendulum should be:

Question # 9

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

Question # 10

Free oscillations are always produced by:

Question # 11

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

Question # 12

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

Question # 13

Hertz is unit of:

Question # 14

Acceleration of body executing SHM is always directed towards

Question # 15

The time taken to complete one vibration is called:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 The restoring force is always directed towards:
A. Rest position
B. Equilibrium position
C. Mean position
D. All of them
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 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
5 Amplitude in SHM is equivalent to ______ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these
6 The SI unit of spring constant is identical with that of:
A. Force
B. Surface tension
C. Pressure
D. Loudness
7 To and fro motion of a body is about its mean position is known as:
A. Translatory motion
B. Vibratory motion
C. Rotatory motion
D. None of these
8 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
9 A body with frequency of would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
10 The unit of spring constant is:
A. J-sec
B. Metre
C. Nm-1
D. None of these

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