Quiz about Kiểm Tra Giữa Kì Môn Vật Lí 11

Question 1

Which quantity below characterizes the time difference between two harmonic oscillations with the same period?

Accepted Answer

Phase difference

Answer

Amplitude

Answer

Phase

Answer

Initial phase

Question 2

The number of complete oscillations an object performs in one second is called

Accepted Answer

Frequency of oscillation

Answer

Amplitude of oscillation

Answer

Phase of oscillation

Answer

Period of oscillation

Question 3

The period of oscillation is

Accepted Answer

the time for the object to complete one oscillation.

Answer

the number of complete oscillations an object performs in one second.

Answer

the time it takes for the object to move from one side to the other of its path.

Answer

the shortest time for the object to return to its initial position.

Question 4

In harmonic oscillation, which quantity below cannot have a negative value?

Accepted Answer

Amplitude

Answer

Phase of oscillation

Answer

Initial phase

Answer

Displacement

Question 5

The time for the object to complete one full oscillation is

Accepted Answer

Period of oscillation

Answer

Frequency of oscillation

Answer

Amplitude of oscillation

Answer

Displacement of oscillation

Question 6

The amplitude of oscillation

Accepted Answer

is the maximum displacement of the object during oscillation.

Answer

is the distance the object travels in one cycle of oscillation.

Answer

is the distance the object travels in half a cycle of oscillation.

Answer

is the length of the object's path.

Question 7

For periodic oscillations, the number of oscillations repeated in a unit of time is called

Accepted Answer

Frequency of oscillation

Answer

Period of oscillation

Answer

Initial phase

Answer

Angular frequency

Question 8

The quantity that characterizes the rapidity or slowness of a harmonic oscillation is

Accepted Answer

Amplitude

Answer

Velocity

Answer

C.

Question 9

The quantity that characterizes the rapidity or slowness of a harmonic oscillation is

Accepted Answer

Frequency

Answer

Amplitude

Answer

Velocity

Answer

Acceleration

Question 10

Free oscillation is an oscillation with a period that

Accepted Answer

depends only on the characteristics of the system, not on external factors

Answer

depends only on external factors, not on the characteristics of the system

Answer

depends only on the mass of the oscillating object

Answer

depends only on the gravitational acceleration

Question 11

Which of the following is not a mechanical oscillation?

Accepted Answer

The motion of a car on the road

Answer

The swinging motion of a clock pendulum

Answer

The swinging motion of a leaf

Answer

The bobbing motion of a buoy on water

Question 12

The phase of oscillation is used to determine

Accepted Answer

State of oscillation

Answer

Amplitude of oscillation

Answer

Frequency of oscillation

Answer

Period of oscillation

Question 13

What is the phase of oscillation used to determine?

Accepted Answer

State of oscillation.

Answer

Amplitude of oscillation.

Answer

Frequency of oscillation.

Answer

Period of oscillation.

Question 14

Which quantity characterizes the time deviation between two harmonic oscillations with the same period?

Accepted Answer

Phase difference.

Answer

Displacement.

Answer

Phase.

Answer

Initial phase.

Question 15

The initial phase of harmonic oscillation depends on:

Accepted Answer

The choice of the origin of coordinates and time.

Answer

The energy transferred to the object for it to oscillate.

Answer

The characteristics of the oscillating system.

Answer

The way the object is stimulated to oscillate.

Question 16

In 10 seconds, the harmonic oscillating object completes 40 oscillations. Which information is incorrect?

Accepted Answer

The oscillation process of the object only repeats after 10 s.

Answer

The period of oscillation of the object is 0.25 s.

Answer

The frequency of oscillation of the object is 4 Hz.

Question 17

Which of the following information is incorrect?

Accepted Answer

Only after 10 s does the oscillation process of the object repeat as before.

Answer

The period of oscillation of the object is 0.25 s.

Answer

The frequency of oscillation of the object is 4 Hz.

Answer

After 0.5 s, the distance the object travels is 8 times the amplitude.

Question 18

For harmonic oscillation, the period of oscillation is the shortest time for a state of oscillation to repeat as before. What parameters are included in the old state?

Accepted Answer

Old velocity and old acceleration.

Answer

Old position.

Answer

Old acceleration and old position.

Answer

Old position and old velocity.

Question 19

An object oscillates harmonically along a path with a length of 10 cm. The amplitude of the oscillation is

Accepted Answer

5 cm.

Answer

10 cm.

Answer

2.5 cm.

Answer

1.125 cm.

Question 20

The amplitude of the harmonic oscillating system depends on which factor?

Accepted Answer

The way of stimulating the object to oscillate.

Answer

The way of choosing the coordinate axis.

Answer

The way of choosing the time origin.

Answer

The structure of the system.

Question 21

Choose the most correct statement? The projection of a uniform circular motion onto a diameter

Accepted Answer

is considered a harmonic oscillation.

Answer

is a harmonic oscillation.

Answer

is a periodic oscillation.

Answer

is not considered a harmonic oscillation.

Question 22

The graph of displacement - time of harmonic oscillation is

Accepted Answer

a sine wave.

Answer

a straight line.

Answer

an ellipse.

Answer

a parabola.

Question 23

An object undergoing harmonic oscillation passes through the equilibrium position

Accepted Answer

twice.

Answer

once.

Answer

four times.

Answer

three times.

Question 24

When changing the initial stimulation method for the object to oscillate, which quantity changes?

Accepted Answer

Frequency and amplitude.

Answer

Initial phase and amplitude.

Answer

Amplitude.

Answer

Frequency and initial phase.

Question 25

A particle oscillates in 1 minute and completes 30 oscillations. What is the period of the oscillation?

Accepted Answer

1 s.

Answer

2 s.

Answer

30 s.

Answer

0.5 s.

Question 26

Given the graph of a harmonic oscillation, what is the amplitude of the oscillation?

Accepted Answer

4 cm.

Answer

2 cm.

Answer

-4 cm.

Answer

-2 m.

Question 27

At time t = 7s, what is the displacement of the particle?

Accepted Answer

4 cm.

Answer

0 cm.

Answer

-4 cm.

Answer

-2 cm.

Question 28

Which statement about the comparison of displacement, velocity, and acceleration is correct? In harmonic oscillation, displacement, velocity, and acceleration are three quantities that vary harmonically over time and have

Accepted Answer

the same angular frequency

Answer

the same amplitude

Answer

the same phase

Answer

the same initial phase

Question 29

A body oscillates harmonically along the Ox axis. Which statement is correct?

Accepted Answer

The trajectory of the body's motion is a cosine curve.

Answer

The trajectory of the body's motion is a straight line.

Answer

The restoring force acting on the body is constant.

Answer

The displacement of the body is proportional to the oscillation time.

Question 30

When a body oscillates harmonically,

Accepted Answer

the velocity of the body has a maximum magnitude when the body is at equilibrium position.

Answer

the restoring force acting on the body has a maximum magnitude when the body is at equilibrium position.

Answer

the acceleration of the body has a maximum magnitude when the body is at equilibrium position.

Answer

the restoring force acting on the body has a magnitude proportional to the square of the amplitude.

Question 31

The velocity of a harmonic oscillator reaches its maximum when

Accepted Answer

the object is at the position of zero displacement.

Answer

the object is at the position of maximum displacement.

Answer

the acceleration of the object is at its maximum.

Answer

the object is at the position of maximum phase.

Question 32

A harmonic oscillator, when passing through the equilibrium position, has a magnitude of

Accepted Answer

maximum velocity, acceleration is zero.

Answer

maximum acceleration, velocity is zero.

Answer

maximum acceleration, velocity is non-zero.

Answer

maximum acceleration and velocity.

Question 33

The acceleration of a harmonic oscillator is zero when

Accepted Answer

the object is at the position of maximum amplitude.

Answer

the velocity of the object reaches its minimum.

Answer

the object is at the position of zero amplitude.

Answer

the object is at the position of maximum phase oscillation.

Question 34

The acceleration of a harmonic oscillator is zero when

Accepted Answer

the object is at the position with zero speed.

Answer

the potential energy of the object is maximum.

Answer

the object is at both ends.

Answer

the net force acting on the object is zero.

Question 35

In a harmonic oscillation along the Ox axis, under which of the following conditions is the net force acting on the object always in the same direction as the direction of motion? The object moves from the position

Accepted Answer

equilibrium to the boundary position.

Answer

boundary to the equilibrium position.

Answer

positive boundary to the negative boundary position.

Answer

negative boundary to the positive boundary position.

Question 36

At time t, the product of the amplitude and velocity of the harmonic oscillator is negative (x.v < 0), what is the motion of the object?

Accepted Answer

Decelerating in the negative direction.

Answer

Accelerating uniformly in the positive direction.

Answer

Accelerating towards the equilibrium position.

Answer

Decelerating towards the boundary.

Question 37

Choose the most correct statement? The projection of a uniform circular motion onto a diameter

Accepted Answer

is considered a harmonic oscillation.

Answer

is a harmonic oscillation.

Answer

is a periodic oscillation.

Answer

is not considered a harmonic oscillation.

Question 38

A periodic oscillation performs 120 oscillations in 1 minute. The period and frequency of the oscillation are:

Accepted Answer

T = 0.5 s; f = 2 Hz.

Answer

T = 60 s; f = 120 Hz.

Answer

T = 2 s; f = 0.5 Hz.

Answer

T = 0.5 s; f = 4 Hz.

Question 39

The graph shows the dependence of amplitude x on time t of a harmonic oscillator. Among the points M, N, K, and Q; the point with the maximum acceleration is

Accepted Answer

Point M and Q.

Answer

Point K.

Answer

Point N.

Answer

Point N and Q.

Question 40

The graph shows the dependence of amplitude on time t of a harmonic oscillator. The amplitude of the oscillation is:

Accepted Answer

2.0 mm.

Answer

1.0 mm.

Answer

0.1 dm.

Answer

0.2 dm.

Question 41

A body oscillates harmonically along the Ox axis. The graph shows the dependence of the displacement x on time t. What is the period of oscillation?

Accepted Answer

0.4 s

Answer

0.8 s

Answer

0.2 s

Answer

0.1 s

Question 42

Which of the following statements about the acceleration of harmonic oscillation is incorrect?

Accepted Answer

The acceleration of harmonic oscillation is always in the same direction as the motion.

Answer

The acceleration of harmonic oscillation varies with the same frequency as the displacement x.

Answer

The acceleration of harmonic oscillation is zero when the net force acting is zero.

Answer

The acceleration of harmonic oscillation is a sine function of time.

Question 43

When a body is oscillating harmonically and moves from the extreme position to the equilibrium position, what happens?

Accepted Answer

The acceleration is in the same direction as the motion.

Answer

The body accelerates uniformly.

Answer

The body decelerates uniformly.

Answer

The acceleration increases in magnitude.

Question 44

When a body oscillates harmonically, the motion of the body from the extreme position to the equilibrium position is called what?

Accepted Answer

Accelerating uniformly.

Answer

Decelerating uniformly.

Answer

Accelerating.

Answer

Decelerating.

Question 45

A point mass oscillates harmonically with displacement depending on time according to a cosine function as shown in the figure. What is the amplitude of the point mass?

Accepted Answer

8 cm

Answer

4 cm

Answer

-4 cm

Answer

-8 cm

Question 46

A small object oscillates harmonically along a straight path of 12 cm. What is the amplitude of this oscillation?

Accepted Answer

12 cm

Answer

24 cm

Answer

6 cm

Answer

3 cm

Question 47

In harmonic oscillation, the magnitude of acceleration of the object

Accepted Answer

decreases when the magnitude of velocity increases

Answer

increases when the magnitude of velocity increases

Answer

remains unchanged

Answer

is zero when the velocity is zero

Question 48

An object oscillates with a displacement-time graph as shown. Find the correct statement?

Accepted Answer

At point B, kinetic energy is maximum.

Answer

Kinetic energy at point C is maximum.

Answer

Kinetic energy at point C is minimum.

Answer

At point B, kinetic energy equals potential energy.

Question 49

The graph below shows the dependence of amplitude on time for a harmonic oscillator. The segment PR on the time axis t represents

Accepted Answer

One period

Answer

Two periods

Answer

Two points in phase

Answer

Half a period

Question 50

A particle oscillates harmonically along the x-axis. The graph shows the dependence of amplitude x on time t. The frequency and amplitude of the oscillation are

Accepted Answer

2 Hz; 10 cm

Answer

2 Hz; 20 cm

Answer

1 Hz; 10 cm

Answer

1 Hz; 20 cm

Question 51

What is the frequency and amplitude of the oscillation?

Accepted Answer

2 Hz; 10 cm

Answer

2 Hz; 20 cm

Answer

1 Hz; 10 cm

Answer

1 Hz; 20 cm

Question 52

The mechanical energy of a particle oscillating harmonically is proportional to

Accepted Answer

the square of the amplitude of oscillation

Answer

the oscillation period

Answer

the amplitude of oscillation

Answer

the square of the period

Question 53

The kinetic energy of a particle oscillating harmonically with period T varies harmonically over time

Accepted Answer

with period T

Answer

according to a sine function

Answer

is constant

Answer

with period T/2

Question 54

Choose the incorrect statement. The energy of a particle oscillating harmonically

Accepted Answer

is always a constant

Answer

is equal to the kinetic energy of the particle when passing through the equilibrium position

Answer

is equal to the potential energy of the particle when passing through the extreme position

Answer

varies periodically over time with period T

Question 55

For a harmonic oscillator with period T, what can be said about the kinetic and potential energy?

Accepted Answer

Both kinetic and potential energy vary periodically over time with period T.

Answer

Both kinetic and potential energy vary periodically over time but not harmonically.

Answer

Both kinetic and potential energy vary periodically over time with period T/2.

Answer

Both kinetic and potential energy vary periodically over time with period 2T.

Question 56

A mass oscillates with a displacement-time graph as shown. What is the correct observation?

Accepted Answer

At point B, kinetic energy is maximum.

Answer

Kinetic energy at point C is maximum.

Answer

Kinetic energy at point C is minimum.

Answer

At point B, kinetic energy equals potential energy.

Question 57

The mechanical energy of a harmonic oscillator

Accepted Answer

Varies periodically over time with a period equal to the oscillation period.

Answer

Doubles when the amplitude of oscillation doubles.

Answer

Varies periodically over time with a period equal to half the oscillation period.

Answer

Is equal to the kinetic energy of the mass when it reaches the equilibrium position.

Question 58

A simple pendulum oscillates from maximum amplitude to equilibrium position. What happens?

Accepted Answer

Kinetic energy increases.

Answer

Potential energy increases.

Answer

Velocity decreases.

Answer

Velocity remains constant.

Question 59

If a mass oscillates harmonically along a fixed axis (with potential energy reference at equilibrium), then

Accepted Answer

The potential energy is maximum when the mass is at the amplitude.

Answer

The kinetic energy is maximum when the acceleration is maximum.

Answer

When the mass moves from equilibrium to amplitude, velocity and acceleration always have the same sign.

Answer

At equilibrium position, the potential energy equals the mechanical energy.

Question 60

Which statement about harmonic oscillation is incorrect?

Accepted Answer

The acceleration of the harmonic oscillator leads the displacement by a phase.

Answer

The kinetic energy is maximum at the equilibrium position.

Answer

The potential energy is maximum at the amplitude.

Answer

The total mechanical energy remains constant.

Question 61

A small object oscillates harmonically along the Ox axis. When moving from the edge position to the equilibrium position, what happens?

Accepted Answer

The magnitude of the velocity of the particle decreases.

Answer

The kinetic energy of the particle decreases.

Answer

The magnitude of the acceleration of the particle decreases.

Answer

The magnitude of the displacement of the particle increases.

Question 62

When discussing the energy of a harmonic oscillator, which statement is correct?

Accepted Answer

The potential energy and kinetic energy of the object vary at the same frequency as the frequency of the displacement.

Answer

In each oscillation cycle of the object, there are four moments when potential energy equals kinetic energy.

Answer

The potential energy of the object reaches its maximum when the object is at the equilibrium position.

Answer

The kinetic energy of the object reaches its maximum when the object is at the edge position.

Question 63

Choose the correct statement regarding the damping oscillation of an object.

Accepted Answer

The amplitude of the object always decreases over time.

Answer

The acceleration of the object always decreases over time.

Answer

The velocity of the object always decreases over time

Answer

The amplitude of oscillation decreases over time.

Question 64

Choose the false statement regarding forced oscillation.

Accepted Answer

Forced oscillation is harmonic oscillation.

Answer

Forced oscillation is oscillation under the influence of periodic external force.

Answer

Forced oscillation has a frequency equal to the frequency of the external force.

Answer

The amplitude of forced oscillation changes over time.

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