ECAT Pre General Science Chapter 7 online mcq test with answers for Physics chapter 7 (Oscillation)

Question # 1

An object undergoes SHM. Its maximum equilibrium positions:

Maximum A
Half of its maximum value B
Zero C
None D

Question # 2

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

Translatory motion A
Vibratory motion B
Rotatory motion C
None of these D

Question # 3

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

Sine curve A
Straight line B
Parabola C
None of these D

Question # 4

Amplitude in SHM is equivalent to ______ in circular motion:

Diameter A
Radius B
Circumference C
None of these D

Question # 5

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

2500 MHz A
0.25 MHz B
2500 KHz C
None of these D

Question # 6

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

Length A
Mass B
Value of g C
Both A and B D

Question # 7

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

3 K A
2 K B
K/4 C
K/3 D

Question # 8

The S.I unit of frequency is

Vibrations s^-2 A
Ms^-1 B
Hertz C
s^-1 D

Question # 9

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:

4 gms A
0.4 gm B
40 gms C
None of these D

Question # 10

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

Force A
Surface tension B
Pressure C
Loudness D

Question # 11

The restoring force is always directed towards:

Rest position A
Equilibrium position B
Mean position C
All of them D

Question # 12

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

Half the vibration A
One vibration B
3/4th of a vibration C
None of these D

Question # 13

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

250 N m^-1 A
25 N m^-1 B
2.5 N m^-1 C
None of these D

Question # 14

The graph showing the variation of displacement with time is a

Sine curve A
Straight line B
Parabola C
None of these D

Question # 15

The restoring force is __ amd opposite to the applied force within _:

Equal, elastic limit A
Different, the walls of the laboratory B
Different, elastic limit C
None of these D

Question # 16

Which one of the following is an example of SHM:

Motion in a plane A
Motion in a swing B
Motion in a car C
None of these D

Question # 17

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

Also be doubled A
Become half B
Become one fourth C
Becomes four times D

Question # 18

The unit of spring constant is:

J-sec A
Metre B
Nm^-1 C
None of these D

Question # 19

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

K/2 A
2 K B
4 K C
None of these D

Question # 20

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

Motion of simple pendulum A
Motion of horizontal spring man system B
Motion of violin string C
All of these D

Question # 21

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

1 cm A
1 m B
10 mm C
None of these D

Question # 22

Hertz is unit of:

Time period A
Displacement B
Amplitude C
Frequency D

Question # 23

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

10 cm A
1 m B
10 mn C
None of these D

Question # 24

The acceleration of body executing SHM is directly proportional to

Applied force A
Amplitude B
Displacement C
Frictional force D

Question # 25

SHM is type of ______ motion

Vibratory A
Linear B
Circular C
None D

Question # 26

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

Force A
Acceleration B
Velocity C
Displacement D

Question # 27

Amplitude is the displacement of the vibrating body from:

One extreme position to the other extreme position A
Mean position any one extreme position B
Both A and B are correct C
None of these D

Question # 28

The time taken to complete one vibration is called:

Frequency A
Amplitude B
Time C
Time period D

Question # 29

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

Time period A
Displacement B
Amplitude C
Frequency D

Question # 30

Free oscillations are always produced by:

An applied force A
Gravitational force B
Restoring force and inertia C
Inertia only D

Sr.#	Question	Answer
1	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
2	Hertz is unit of:	A. Time period B. Displacement C. Amplitude D. Frequency
3	The graph showing the variation of displacement with time is a:	A. Sine curve B. Straight line C. Parabola D. None of these
4	Velocity of particle executing SHM will be maximum at	A. Extreme position B. Mean position C. b/w mean and extreme D. None
5	The string of a simple pendulum should be:	A. Heavy B. Extensible C. In-extensible D. None of these
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	An angle of 180° in circular motion is equivalent to ______ in SHM.	A. Half the vibration B. One vibration C. 3/4th of a vibration D. None of these
8	The acceleration of body executing SHM is directly proportional to	A. Applied force B. Amplitude C. Displacement D. Frictional force
9	The displacement of body executing SHM is	A. x_ocoswt B. x_osinwt C. x_osin²wt D. Both A, B
10	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

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