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 SI unit of spring constant is identical with that of:

Question # 2

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

Question # 3

The acceleration of body executing SHM is directly proportional to

Question # 4

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

Question # 5

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

Question # 6

The S.I unit of frequency is

Question # 7

When a body is vibrating, the displacement from mean position

Question # 8

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

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

An object undergoes SHM. Its maximum equilibrium positions:

Question # 11

Which one of the following is an example of SHM

Question # 12

Which of the following is an example of SHM(in ideal situations)

Question # 13

A particle moving uniformly along circle its projection along diameter performs

Question # 14

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

Question # 15

The unit of spring constant is

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:
A. Increases
B. Decreases
C. Remains constant
D. None of these
2 If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:
A. 2500 MHz
B. 0.25 MHz
C. 2500 KHz
D. None of these
3 Vibratory motion is always under
A. Applied force
B. Restoring force
C. Periodic force
D. Gravitational force
4 The unit of spring constant is
A. J-sec
B. Metre
C. Nm-1
D. None of these
5 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
6 A body with frequency would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
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 An oscillating body oscillates due to:
A. Applied force
B. Restoring force
C. Frictional force
D. None of these
9 Velocity of particle executing SHM will be maximum at
A. Extreme position
B. Mean position
C. b/w mean and extreme
D. None
10 If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:
A. K/2
B. 2 K
C. 4 K
D. None of these

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