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

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

Question # 2

Velocity of particle executing SHM will be maximum at

Question # 3

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

Question # 4

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

Question # 5

The wave form of SHM is

Question # 6

Which one of the following is an example of SHM

Question # 7

Vibratory motion is always under

Question # 8

If time period of a pendulum is doubled by increasing its length, then its frequency will

Question # 9

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

Question # 10

When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

The number of vibrations in two seconds can be expressed as______if frequency of vibration is f.

Question # 15

If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:
A. Circular motion, circumference
B. Vibrator, chord
C. SHM, diameter
D. SHM, circumference
2 The restoring force is always directed towards:
A. Rest position
B. Equilibrium position
C. Mean position
D. All of them
3 Velocity of particle executing SHM will be maximum at
A. Extreme position
B. Mean position
C. b/w mean and extreme
D. None
4 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
5 To and from motion of a body about its mean position is known as:
A. Translatory motion
B. Vibratory motion
C. Rotatory motion
D. None of these
6 A body with frequency of would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
7 If a given spring of spring constant k is cut into two indentical segments, the spring constant of each segment is:
A. k/2
B. 2 k
C. 4 k
D. None of these
8 The restoring force is ______ and opposite tot he applied force within ______
A. Equal, Elastic limit
B. Different, The walls of the laboratory
C. Different, Elastic limit
D. None of these
9 Acceleration of body executing SHM is always directed towards
A. Extreme position
B. Mean position
C. Along the direction of motion
D. None
10 Amplitude in SHM is equivalent to ______ in circular motion:
A. Diameter
B. Radius
C. Circumference
D. None of these

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