Wave Phenomena: Master the Fundamentals of Wave Interactions

Question 1

When a wave passes from one medium to another, which property REMAINS constant?

Accepted Answer

Frequency

Answer

Wavelength

Answer

Speed

Answer

Amplitude

Question 2

What type of waves are produced when a disturbance is created in a medium?

Accepted Answer

Mechanical waves

Answer

Electromagnetic waves

Answer

Gravitational waves

Answer

Sound waves

Question 3

Which of the following phenomena occurs when waves meet an obstacle and spread out around its edges?

Accepted Answer

Diffraction

Answer

Reflection

Answer

Refraction

Answer

Interference

Question 4

What is the principle behind the use of lenses to focus light?

Accepted Answer

Refraction of light waves

Answer

Reflection of light waves

Answer

Diffraction of light waves

Answer

Interference of light waves

Question 5

Which of the following describes constructive interference?

Accepted Answer

When waves combine to produce a maximum amplitude

Answer

When waves combine to produce a minimum amplitude

Answer

When waves combine to produce no amplitude

Answer

When waves combine to produce a random amplitude

Question 6

Which of the following is NOT a fundamental characteristic of waves?

Accepted Answer

Pitch

Answer

Wavelength

Answer

Frequency

Answer

Amplitude

Question 7

When a pebble is dropped in a pond, which type of wave is produced?

Accepted Answer

Surface

Answer

Transverse

Answer

Longitudinal

Answer

Stationary

Question 8

Which factor primarily determines the speed of a wave?

Accepted Answer

Medium through which the wave propagates

Answer

Wavelength of the wave

Answer

Frequency of the wave

Answer

Amplitude of the wave

Question 9

What is the condition for constructive interference of two waves?

Accepted Answer

Path difference is an integer multiple of the wavelength

Answer

Path difference is half an integer multiple of the wavelength

Answer

Path difference is a quarter of an integer multiple of the wavelength

Answer

Path difference is an arbitrary value

Question 10

What causes interference?

Accepted Answer

When two or more waves meet

Answer

When a wave reflects off a surface

Answer

When a wave passes through a narrow opening

Answer

When a wave travels through a medium with varying density

Question 11

What is the critical angle for total internal reflection?

Accepted Answer

The angle at which a wave undergoes total internal reflection

Answer

The angle at which a wave is reflected back into the same medium

Answer

The angle at which a wave is diffracted around an obstacle

Answer

The angle at which a wave is refracted into a different medium

Question 12

What is the phenomenon called when a wave bends as it passes from one medium to another?

Accepted Answer

Refraction

Answer

Reflection

Answer

Diffraction

Answer

Interference

Question 13

A wave is reflected from a fixed boundary. Which of the following statements is true?

Accepted Answer

The phase of the reflected wave shifts by 180 degrees.

Answer

The frequency of the reflected wave is halved.

Answer

The amplitude of the reflected wave is doubled.

Answer

The wavelength of the reflected wave is tripled.

Question 14

A wave is travelling through a medium. Which of the following quantities is conserved as the wave travels?

Accepted Answer

Energy

Answer

Momentum

Answer

Frequency

Answer

Wavelength and Frequency

Question 15

Diffraction refers to the bending of waves around obstacles or through apertures. Choose the correct statement.

Accepted Answer

True

Answer

False

Question 16

Which characteristic is associated with standing waves?

Accepted Answer

They have nodes and antinodes

Answer

They do not transfer energy

Answer

They are only formed in closed systems

Answer

They have a constant amplitude

Question 17

What is the critical angle for total internal reflection of a wave?

Accepted Answer

The angle at which the refracted wave becomes parallel to the surface

Answer

The angle at which the reflected wave becomes parallel to the surface

Answer

The angle at which the incident wave is perpendicular to the surface

Answer

The angle at which the transmitted wave becomes parallel to the surface

Question 18

What is the primary purpose of a diffraction grating?

Accepted Answer

To produce a spectrum of light

Answer

To focus light

Answer

To diffract light

Answer

To reflect light

Question 19

What is the phenomenon called when the superposition of two or more waves produces a pattern of alternating maxima and minima?

Accepted Answer

Interference

Answer

Reflection

Answer

Diffraction

Answer

Refraction

Question 20

What is the relationship between the wavelength and frequency of a wave?

Accepted Answer

Wavelength is inversely proportional to frequency

Answer

Wavelength is directly proportional to frequency

Answer

Wavelength is independent of frequency

Question 21

Which phenomenon causes waves to bend around obstacles?

Accepted Answer

Diffraction

Answer

Reflection

Answer

Interference

Answer

Refraction

Question 22

What occurs when two waves of equal amplitude and frequency encounter each other?

Accepted Answer

Constructive or destructive interference

Answer

Refraction only

Answer

Diffraction only

Question 23

Which type of boundary causes waves to reflect without changing direction?

Accepted Answer

Fixed boundary

Answer

Absorbing boundary

Answer

Semi-infinite boundary

Answer

Moving boundary

Question 24

When a wave changes direction as it passes from one medium to another, it is due to:

Accepted Answer

Refraction

Answer

Reflection

Answer

Interference

Answer

Diffraction

Question 25

Which property determines a wave's ability to pass through narrow openings?

Accepted Answer

Wavelength

Answer

Polarization

Answer

Frequency

Answer

Amplitude

Question 26

When a wave meets an obstacle, what can happen to it?

Accepted Answer

Reflection, transmission, or absorption

Answer

Interference only

Answer

Diffraction only

Answer

Refraction only

Question 27

A wave with a frequency of 5.0 Hz travels through a medium at a speed of 10 m/s. What is the wavelength of the wave?

Accepted Answer

2.0 m

Answer

50 m

Answer

10 m

Answer

0.5 m

Question 28

When light passes from air into glass, which of the following properties remains constant?

Accepted Answer

Frequency

Answer

Speed

Answer

Wavelength

Answer

Amplitude

Question 29

Two waves of the same frequency and amplitude are traveling in opposite directions along a string. When they interfere, they produce a standing wave. Which of the following is true about the points on the string that remain stationary?

Accepted Answer

They are called nodes and experience destructive interference.

Answer

They are called antinodes and experience constructive interference.

Answer

They are called nodes and experience constructive interference.

Question 30

A single slit diffraction pattern is observed. If the width of the slit is decreased, what happens to the central maximum of the diffraction pattern?

Accepted Answer

It becomes wider.

Answer

It remains the same width.

Answer

It disappears completely.

Answer

It becomes narrower.

Question 31

Which of the following phenomena is the best evidence for the wave nature of light?

Accepted Answer

Diffraction

Answer

Refraction

Answer

Reflection

Question 32

A sound wave with a frequency of 100 Hz travels from air into water. What happens to the speed and wavelength of the sound wave?

Accepted Answer

Speed increases, wavelength increases.

Answer

Speed increases, wavelength decreases.

Answer

Speed decreases, wavelength decreases.

Answer

Speed decreases, wavelength increases.

Question 33

Two waves interfere constructively if their path difference is:

Accepted Answer

An integer multiple of the wavelength.

Answer

One and a half wavelengths.

Answer

Half the wavelength.

Question 34

Which of the following is an example of a transverse wave?

Accepted Answer

Light wave

Answer

Pressure wave

Answer

Sound wave

Question 35

The angle of incidence is equal to the angle of reflection. This law is known as:

Accepted Answer

The law of reflection.

Answer

Snell's law.

Answer

The law of refraction.

Question 36

The Doppler effect describes the change in the observed frequency of a wave due to:

Accepted Answer

Relative motion between the source and the observer.

Answer

Diffraction of waves through a narrow opening.

Answer

Interference between two waves.

Question 37

A wave is traveling from a less dense medium to a more dense medium. What happens to the wave's speed and wavelength?

Accepted Answer

Speed decreases, wavelength decreases

Answer

Speed decreases, wavelength increases

Answer

Speed increases, wavelength increases

Answer

Speed increases, wavelength decreases

Question 38

Which of the following phenomena is the spreading of waves as they pass through an opening or around an obstacle?

Accepted Answer

Diffraction

Answer

Reflection

Answer

Interference

Answer

Refraction

Question 39

A wave with a wavelength of 0.5 m travels at a speed of 2 m/s. What is the wave's frequency?

Accepted Answer

4 Hz

Answer

0.25 Hz

Answer

1 Hz

Answer

10 Hz

Question 40

When light passes from air into glass, which of the following properties remains constant?

Accepted Answer

Frequency

Answer

Speed

Answer

Wavelength

Answer

Amplitude

Question 41

Two waves interfere constructively. Which of the following statements is true about their relative phase difference?

Accepted Answer

The phase difference is a multiple of 2π.

Answer

The phase difference is π.

Answer

The phase difference is an odd multiple of π/2.

Answer

The phase difference is an even multiple of π/2.

Question 42

Which of the following phenomena provides evidence for the wave nature of light?

Accepted Answer

Diffraction and interference

Answer

Refraction and dispersion

Answer

Reflection and dispersion

Answer

Reflection and refraction

Question 43

A sound wave with a frequency of 100 Hz has a wavelength of 3.4 m. What is the speed of sound in this medium?

Accepted Answer

340 m/s

Answer

0.034 m/s

Answer

34 m/s

Answer

3400 m/s

Question 44

A wave is incident on a fixed boundary. What is the phase difference between the incident and reflected waves?

Accepted Answer

π radians

Answer

π/2 radians

Answer

2π radians

Answer

0 radians

Question 45

The Doppler effect describes the change in observed frequency of a wave due to which of the following?

Accepted Answer

Relative motion between the source and observer

Answer

Diffraction of waves

Answer

Interference of waves

Answer

Change in medium of the wave

Question 46

A wave travels from a less dense medium to a denser medium. What happens to its speed and wavelength?

Accepted Answer

Speed decreases, wavelength decreases

Answer

Speed increases, wavelength decreases

Answer

Speed increases, wavelength increases

Answer

Speed decreases, wavelength increases

Question 47

Two waves with slightly different frequencies interfere. What phenomenon will be observed?

Accepted Answer

Beats

Answer

Reflection

Answer

Diffraction

Answer

Polarization

Question 48

A narrow slit is illuminated by a beam of light. What happens to the light waves after passing through the slit?

Accepted Answer

They spread out, exhibiting diffraction

Answer

They reflect back from the slit

Answer

They remain as a straight beam

Answer

They are absorbed by the slit

Question 49

A light wave is reflected from a surface. What happens to the frequency of the wave?

Accepted Answer

It remains the same

Answer

It increases

Answer

It depends on the angle of incidence

Answer

It decreases

Question 50

A wave is diffracted through a narrow opening. What happens to the wavelength of the wave?

Accepted Answer

It remains the same

Answer

It depends on the size of the opening

Answer

It increases

Answer

It decreases

Question 51

Two waves are in phase and interfere. What is the resultant amplitude compared to the individual amplitudes?

Accepted Answer

Greater than either individual amplitude

Answer

Less than either individual amplitude

Answer

Equal to either individual amplitude

Answer

Zero

Question 52

A wave is reflected from a fixed end. What happens to the phase of the reflected wave?

Accepted Answer

It changes by 180 degrees

Answer

It depends on the type of wave

Answer

It changes by 90 degrees

Answer

It remains the same

Question 53

Which of the following is NOT a characteristic of a transverse wave?

Accepted Answer

The particles of the medium vibrate parallel to the direction of wave propagation

Answer

The wave can be reflected

Answer

The wave can be polarized

Question 54

A double slit experiment is performed with light. What happens to the interference pattern as the distance between the slits is increased?

Accepted Answer

The spacing between the fringes decreases

Answer

The spacing between the fringes increases

Answer

The fringes become dimmer

Answer

The fringes become brighter

Question 55

What is the phenomenon where a wave bends around an obstacle or spreads out through an opening?

Accepted Answer

Diffraction

Answer

Interference

Answer

Reflection

Answer

Refraction