ECAT Pre General Science Physics Chapter 7 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 7 Oscillations

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ECAT Pre General Science Physics Chapter 7 Oscillations

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Question # 1

The unit of spring constant is

Question # 2

When a body is vibrating, the displacement from mean position:

Question # 3

If a mass of 10 gm is suspended from a spring of k = 9.8 Nm-1, then the extension will be:

Question # 4

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

Question # 5

If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:

Question # 6

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 # 7

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 # 8

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

Question # 9

The time period of a simple pendulum is independent of its:

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

The acceleration of body executing SHM is directly proportional to

Question # 14

The restoring force is always directed towards:

Question # 15

Amplitude in SHM is equivalent to ______ in circular motion

Question # 16

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

Question # 17

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

Question # 18

Velocity of particle executing SHM will be maximum at

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

Amplitude in SHM is equivalent to ______ in circular motion:

Question # 24

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

Question # 25

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 # 26

The string of a simple pendulum should be:

Question # 27

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

Question # 28

The number of vibration in two seconds can be expressed as
______ of frequency of vibration is f:

Question # 29

The graph showing the variation of displacement with time is a:

Question # 30

Hertz is unit of:

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ECAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 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
2 An object in SHM will have maximum speed when its displacement from equilibrium position is:
A. Infinity
B. Maximum
C. Zero
D. Minimum
3 Hertz is unit of:
A. Time period
B. Displacement
C. Amplitude
D. Frequency
4 A particle moving uniformly along circle its projection along diameter performs
A. Linear motion
B. Projectile motion
C. SHM
D. Rotatory motion
5 A body with frequency would complete one vibration in:
A. f seconds
B. 1/f seconds
C. 1 second
D. f2second
6 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
7 When quarter of a circle is completed, phase of vibration is:
A. 90°
B. 180°
C. 45°
D. 360°
8 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
9 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
10 In SHM, the acceleration is ______ when velocity is _____:
A. Zero, smallest
B. Smallest, zero
C. Zero, zero
D. Zero, greatest

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