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

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

Question # 2

The maximum distance of body from mean position when body is executing SHM is called

Question # 3

Acceleration of body executing SHM is always directed towards

Question # 4

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

Question # 5

SHM is type of ______ motion

Question # 6

The S.I unit of frequency is

Question # 7

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

Question # 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:

Question # 9

The unit of spring constant is:

Question # 10

The time taken to complete one vibration is called:

Question # 11

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

Question # 12

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

Question # 13

The unit of spring constant is

Question # 14

Amplitude in SHM is equivalent to ______ in circular motion

Question # 15

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

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Sr.# Question Answer
1 The graph showing the variation of displacement with time is a
A. Sine curve
B. Straight line
C. Parabola
D. None of these
2 Acceleration of body executing SHM is always directed towards
A. Extreme position
B. Mean position
C. Along the direction of motion
D. None
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 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
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 The restoring force is always directed towards:
A. Rest position
B. Equilibrium position
C. Mean position
D. All of them
7 If time period of a pendulum is doubled by increasing its length, then its frequency will
A. Also be doubled
B. Become half
C. Become one fourth
D. Becomes four times
8 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
9 If a force of 0.05 N produces an elongation of 20 mm in a 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
10 The SI unit of spring constant is identical with that of
A. Force
B. Surface tension
C. Pressure
D. Loudness
11 The body oscillates due to _____ accelerates and overshoots the rest position due to______,:
A. Applied force, inertial
B. Restoring force, friction
C. Frictional force, inertial
D. Restoring force, inertial
12 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
13 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
14 Which of the following forces is responsible for SHM
A. Applied force
B. Restoring force
C. Fractional force
D. Elastic force
15 If mass of 10 gm is suspended from a spring of K=0.8 Nm-1then the extension will be:
A. 10 cm
B. 1 m
C. 10 mn
D. None of these

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