ECAT Pre Engineering Physics Chapter 7 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 7 Oscillations

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 7 Oscillations

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Physics ECAT Pre Engineering Chapter 7 Oscillations

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Question # 1

An oscillating body oscillates due to:

Question # 2

When quarter of a circle is completed, phase of vibration is:

Question # 3

Which of the following quantity for particle executing SHM is non-zero at mean position

Question # 4

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:

Question # 5

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

Question # 6

The S.I unit of frequency is

Question # 7

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

Question # 8

A body with frequency would complete one vibration in:

Question # 9

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

Question # 10

Acceleration of body executing SHM is always directed towards

Question # 11

Amplitude in SHM is equivalent to ______ in circular motion

Question # 12

The SI unit of spring constant is identical with that of

Question # 13

The unit of spring constant is:

Question # 14

A body with frequency of would complete one vibration in:

Question # 15

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

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The acceleration of body executing SHM is directly proportional to
A. Applied force
B. Amplitude
C. Displacement
D. Frictional force
2 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:
A. 1.5 sec
B. 2.0 sec
C. 2.3 sec
D. 2.5 sec
3 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
4 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
5 The maximum distance of body from mean position when body is executing SHM is called
A. Time period
B. Displacement
C. Amplitude
D. Frequency
6 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
7 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
8 A body with frequency of would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
9 The restoring force is _____ and 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
10 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

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