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

Question # 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:

Question # 3

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

Question # 4

The S.I unit of frequency is

Question # 5

Vibratory motion is always under

Question # 6

Free oscillations are always produced by:

Question # 7

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

Question # 8

An object in SHM will have maximum speed when its displacement from equilibrium position is:

Question # 9

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

Question # 10

The wave form of SHM is

Question # 11

The graph showing the variation of displacement with time is a

Question # 12

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

Question # 13

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

Question # 14

A body with frequency of would complete one vibration in:

Question # 15

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Vibratory motion is always under
A. Applied force
B. Restoring force
C. Periodic force
D. Gravitational force
2 The restoring force is always directed towards:
A. Rest position
B. Equilibrium position
C. Mean position
D. All of them
3 The unit of spring constant is:
A. J-sec
B. Metre
C. Nm-1
D. None of these
4 Hertz is unit of:
A. Time period
B. Displacement
C. Amplitude
D. Frequency
5 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
6 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
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 The SI unit of spring constant is identical with that of:
A. Force
B. Surface tension
C. Pressure
D. Loudness
9 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
10 The acceleration of body executing SHM is directly proportional to
A. Applied force
B. Amplitude
C. Displacement
D. Frictional force

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