# Oscillations and Waves MCQ Science

50 Questions 30 Mins

Oscillations and waves are all around us. In this blog post, we will discuss what oscillations and waves are, why they occur, and how we can use them to our advantage. Oscillations are a repeating back-and-forth motion, while waves involve the propagation of energy through a medium. Oscillations and waves have many applications in science and engineering, and can be used to transmit information or energy. We will explore some of these applications in this post!

So, what are oscillations and waves? Oscillations are a repeating motion in which an object moves back and forth about a fixed point. The most common type of oscillation is a pendulum, in which a mass is attached to a string and swings back and forth. Waves, on the other hand, involve the transfer of energy through a medium, such as air or water. Waves can be either transverse or longitudinal. Transverse waves are those in which the direction of the wave is perpendicular to the direction of travel.

One of the most important applications of oscillations and waves is in the field of communication. Oscillations are used to carry information through the air in the form of radio waves, and they are also used to carry information through optical fibers in the form of light waves.

Following are some of the multiple choice questions on the Oscillations and Waves with answers that will help the students in developing their knowledge.

## Oscillations and Waves MCQ

### 1. Base on the formula above what is  ω and ϕω\ and\ ϕω and ϕ  stand for?

&nbsp;x=xmcos⁡(ωt+ϕ)x=xm\cos(ωt+ϕ)x=xmcos(ωt+ϕ)&nbsp;&nbsp;
• ω is the angular frequency
• ϕ is the phase constant
• ω is the angular velocity
• Both A & B

### 2. The aim of the above formula is to find?

&nbsp;v=−ωxmsin⁡(ωt+ϕ)v=−ωxm\sin(ωt+ϕ)v=−ωxmsin(ωt+ϕ)&nbsp;&nbsp;
• displacement
• velocity
• acceleration
• angular velocity

### 3. What is  xmxmxm in above equation stand for?

&nbsp;x=xmcos⁡(ωt+ϕ)x=xm\cos(ωt+ϕ)x=xmcos(ωt+ϕ)&nbsp;&nbsp;
• amplitude of the distance
• amplitude of the displacement
• distance of the amplitude
• velocity of the amplitude

### 4. What is κ and I stand for in the above formula?

&nbsp;T=2πIκT=2π\sqrt{\frac{I}{κ}}T=2πκI​​&nbsp;&nbsp;
• I is the rotational inertia of the object about the axis of rotation
• κ is the torsion constant of the wire
• I is the rotational outer of the object about the axis of rotation
• Both A & B

### 5. For the force acting on the block, the formula can now relate the spring constant k (a measure of the stiffness of the spring) to the mass of the block and the resulting angular frequency of what formula?

&nbsp;F=−kxF=−kxF=−kx&nbsp;&nbsp;
•  k=mω2k=mω^2k=mω2
•  k=mvk=\frac{m}{v}k=vm​
•  k=ωmk=\frac{ω}{m}k=mω​
•  m=kωm=kωm=kω

### 6. The aim of the above formula is to find?

&nbsp;T=2πmkT=2π\sqrt{\frac{m}{k}}T=2πkm​​&nbsp;&nbsp;
• distance
• period
• acceleration
• angular frequency

### 7. The aim of the above formula is to find?

&nbsp;ω=kmω=\sqrt{\frac{k}{m}}ω=mk​​&nbsp;&nbsp;
• displacement
• velocity
• acceleration
• angular frequency

### 8. The aim of the above formula is to find?

&nbsp;x=xmcos⁡(ωt+ϕ)x=xm\cos(ωt+ϕ)x=xmcos(ωt+ϕ)&nbsp;&nbsp;
• distance
• displacement
• velocity
• acceleration

### 9. The aim of the above formula is to find?

v=−ωxmsin(ωt+ϕ)
• displacement
• velocity
• acceleration
• angular velocity

• Gaung
• Gema
• Akustik
• Feedback

• 900 m
• 300 m
• 150 m
• 100 m

• Bats
• Dogs
• Snakes
• Both A & B

### 13. The range audiosonic frequency is . . . .

• 20 - 2000 Hz
• 10 - 10 000 Hz
• 20 - 20 000 Hz
• 20 - 10 000 Hz

### 14. The following are the properties of electromagnetic waves (light):

• Can be reflected
• Can be diffracted
• Can be interferred
• All of above

### 15. An imaginary line that is perpendicular to any surfaces is called . . . .

• imaginary line
• vertical line
• normal line
• straight line

### 16. The wave can propagate without any medium. It is the characteristic of these waves, except . . . .

• Light
• Electromagnetic wave
• Infrared
• Sound wave

• 16.7 m/s
• 60 m/s
• 75 m/s
• 150 m/s

• 600 m
• 302 m
• 300 m
• 150 m

• 1000 s
• 10 s
• 0.1 s
• 0.001 s

• Pitch
• Loudness
• Vibration
• Both A & B

### 21. A change of amplitude will change:

• the wavelength
• the loudness
• the frequency
• the pitch

### 22. Wave period means . . . .

• the highest point above the rest position
• the time taken for a full cycle of the wave
• the maximum displacement of a point of a wave from its rest position
• the number of waves passing a point each second

• 50 seconds
• 5 seconds
• 0.2 second
• 0.02 second

• 90 seconds
• 6 seconds
• 4 seconds
• 0.25 second

• 0.4 Hz
• 1.0 Hz
• 2.5 Hz
• 4.0 Hz

• 0.2 s
• 0.5 s
• 1.0 s
• 5.0 s

### 27. The following are the examples of transverse waves:

• ripples on the surface of water
• vibrations in a guitar string
• seismic wave
• Both A & B

### 28. The following are the characteristics of longitudinal waves:

• the vibrations are parallel to the direction of wave travel
• can propagate through solids, liquids, and gasses
• consists of compressions and rarefactions
• All of above

• Amplitude
• Frequency
• Crests
• Period

### 30. The number of waves passing a point each second is . . . .

• Period
• Longitudinal waves
• Frequency
• Wavelength

### 31. Many oscillations are merely amusing or annoying, but many others are dangerous or financially important. pick the correct examples

• When a bat hits a baseball
• When the wind blows past a power line
• When an airplane is in flight
• All of above

### 32. Why when a bat hits a baseball and when the wind blows past a power line are the example of oscillation?

• the line may oscillate (“gallop” in electrical engineering terms) so severely that it rips apart, shutting off the power supply to a community
• When a bat hits a baseball, the bat may oscillate enough to sting the batter’s hands or even to break apart
• When a bat hits a baseball, the bat may push through the batter’s hands or even break apart and become one
• Both A & B

### 33. A particle in simple harmonic motion has, at any time, kinetic energy and potential energy of what formula?

• K=12mv2K=\frac{1}{2}mv^2K=21​mv2
• U=12kx2U=\frac{1}{2}kx^2U=21​kx2
• U=12kxU=\frac{1}{2}kx^{ }U=21​kx
• Both A & B

• K
• U
• E
• Both A & B

### 35. For small-angle oscillations of a simple pendulum, relate the period T (or frequency f) to what variable?

• to the pendulum’s length L
• to the distance h between the pivot and the center of mass
• the angular position θ and rate
• Both A & B

• physics
• engineering
• biology
• Both A & B

### 37. Explain the statement of An oscillator produces an oscillatory disturbance that moves through the surrounding medium

• If the oscillator is a mechanical oscillator and if it is placed in liquid like water, it produces waves that travel in a liquid medium
• If the oscillator is an electronic circuit, then electromagnetic waves are produced and transmitted to surrounding air/vacuum through inductance coils or antenna
• If the oscillator is an electronic circuit, then electromagnetic waves fail to develop
• Both A & B

### 38. The value of  xmxmxm   determines how far the particle moves in its oscillations and is called the amplitude of what?

•  oscillations
• simple harmonic motion
•  freeze-frames
• velocity

### 39. In simple harmonic motion (SHM), the displacement x(t) of a particle from its equilibrium position is described by the equation of?

• x = xm cos(ωt - 2ϕ)
• x = xm cos(ωt + 2ϕ)
• x = xm cos(ωt + ϕ)
• x = xm cos(2ωt + ϕ)

• T=2/F
• T=1/F
• T=3/F
• T=4/F

### 41. What is common with all electromagnetic and mechanical waves?

• They travel at the same speed
• They transfer energy
• They are all longitudinal waves
• They are all transverse waves

### 42. Sound is an example of a

• transverse wave
• longitudinal wave
• focal wave
• electromagnetic wave

### 43. A student in a band notices that a drum vibrates when another instrument emits a certain frequency note. This phenomenon illustrates

• reflection
• refraction
• resonance
• doppler effect

### 44. The number of wavelengths that pass a point each per second is:

• frequency
• period
• longitudinal
• transverse wave

• 0.26 sec
• 1.645 sec
• 0.26 hz
• 1.645 hz

• 0.50 s
• 2 s
• 0.5 Hz
• 2 Hz

• 2 sec
• 12 sec
• 8 sec
• 10 sec

### 48. An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could

• double the amplitude of vibration
• double the force constant (spring constant) of the spring
• double both the amplitude and force constant (spring constant).
• double the mass

### 49. Which material does sound travel the fastest?

• solid
• liquid
• gases
• None of these

• 0.00200 m
• 0.0196 m
• 0.0816 m
• 0.800 m