COPY: Waves: Properties and Behaviors

Play an AI-generated podcast conversation about this lesson

What happens to the amount of diffraction as the wavelength of a wave increases?

It fluctuates randomly.

It increases. (correct)

It remains the same.

It decreases.

Diffraction is only noticeable when an opening is much larger than the wavelength of the wave.

False

What principle states that every point of a wave front can be considered a secondary source of wavelets?

Huygens's principle

When the source, obstacle, and screen are far apart, the diffraction is termed ________ diffraction.

Fraunhofer Signup and view all the answers

According to Huygens' principle, how to secondary wavelets spread?

They spread in all directions. Signup and view all the answers

When waves encounter the edge of an obstacle, the waves do not spread out.

False Signup and view all the answers

Match the type of diffraction with the description of source, obstacle and screen distances:

Fresnel diffraction = Source and screen relatively close to the obstacle Fraunhofer diffraction = Source, obstacle, and screen are far apart Signup and view all the answers

When the wavelength of the waves is smaller than the obstacle, no noticeable ________ occurs.

diffraction Signup and view all the answers

What is the resultant displacement when two waves with displacements $y_1$ and $y_2$ overlap?

$y_1 + y_2$ Signup and view all the answers

In single-slit diffraction, what condition leads to complete darkness on a screen?

m'λ = D sinθm' Signup and view all the answers

According to the principle of superposition, when two waves overlap, the resultant displacement is the product of the individual displacements.

False Signup and view all the answers

Out-of-phase waves always reinforce each other, leading to constructive interference.

False Signup and view all the answers

What is the term used when two waves arrive at a point in phase, reinforcing each other?

constructive interference Signup and view all the answers

What is the term for the phenomenon where two or more waves overlap in space?

Interference Signup and view all the answers

The ability to distinguish two objects through an optical instrument is limited by the ______ patterns caused by the aperture.

diffraction Signup and view all the answers

For total destructive interference to occur, two coherent waves of the same amplitude must be ______ out-of-phase.

180° Signup and view all the answers

What does the critical angle (θcr) for resolution depend on?

The wavelength of light and the aperture diameter Signup and view all the answers

Which condition is NOT required for interference to occur?

The waves must have different amplitudes. Signup and view all the answers

Match the following terms with the descriptions below:

Diffraction = Spreading of light waves as they pass through an aperture Interference = Combination of two or more waves to produce a resultant wave Superposition = The principle of combining individual wave displacements Resolution = Ability to distinguish between two objects Signup and view all the answers

The principle of superposition only applies to mechanical waves, not electromagnetic waves.

False Signup and view all the answers

The bright band in single slit diffraction is known as the ______ bright band.

central Signup and view all the answers

In the context of wave interference, what does it mean for sources to be 'coherent'?

maintaining a constant phase with respect to each other Signup and view all the answers

Sunlight only shows distinct colors due to refraction.

False Signup and view all the answers

Match the terms with their descriptions:

Constructive Interference = Waves reinforce each other Destructive Interference = Waves cancel each other In-phase = Waves aligned Out-of-phase = Waves misaligned Signup and view all the answers

In Young's double-slit experiment, what causes the interference pattern observed on the viewing screen?

Combination of diffraction and interference of light waves from the two slits Signup and view all the answers

In Young's double-slit experiment, the interference fringes are always perpendicular to the slits.

False Signup and view all the answers

In Young's double-slit experiment, what does the value 'm' represent in the equation $y_m = \frac{Rm\lambda}{d}$?

The order of the bright fringe Signup and view all the answers

The distance between the slits and the screen in Young's experiment is represented by the variable ____.

R Signup and view all the answers

If the distance between the slits and the screen in Young's experiment is increased, what happens to the distance between the bright fringes?

The distance increases Signup and view all the answers

In the given example, what is the wavelength of light calculated from the two-slit interference experiment?

633 nm Signup and view all the answers

In the context of radio antennas, the intensity of radiation is always uniform in all directions.

False Signup and view all the answers

Match the terms with their descriptions in the context of Young's double-slit experiment

Constructive interference = Where bright fringes occur Destructive interference = Where dark fringes occur Wavelength = Distance between successive peaks or troughs of a wave Slit separation = Distance between the two slits Signup and view all the answers

What is the angle, represented by θ, when m = -1 in the context of wave interference?

-30° Signup and view all the answers

According to the Doppler effect, when a sound source moves away from a stationary observer, the perceived frequency is higher.

False Signup and view all the answers

What is the relationship between frequency (f), speed of light (c), and wavelength (λ)?

c = fλ Signup and view all the answers

The Doppler effect describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the ________ of the wave.

source Signup and view all the answers

Match the following values of 'm' with their corresponding angles ('θ').

m = -2 = θ = -90° m = -1 = θ = -30° m = 0 = θ = 0° m = +1 = θ = +30° m = +2 = θ = +90° Signup and view all the answers

If the wavelength of an electromagnetic wave emitted by vibrating HCl molecule is 3.75 µm, what is the frequency?

8 x 10^13 Hz Signup and view all the answers

What happens to the perceived frequency of a sound wave when the source is moving away from a stationary observer?

The perceived frequency decreases. Signup and view all the answers

The Doppler effect only applies to sound waves, not light waves.

False Signup and view all the answers

A stationary sound source emits a frequency of 400 Hz. If an observer moves towards the source, which of the following is true?

The observed frequency will be higher than 400 Hz. Signup and view all the answers

When a light source moves away from an observer, its light is blueshifted.

False Signup and view all the answers

A car horn emits a sound at a frequency of fs. If the car is moving towards an observer with speed vs and the observer is moving towards the car with a speed vo, what is the general expression for the frequency that the observer hears?

fo = (v + vo)fs / (v + vs) (where v is the speed of sound) Signup and view all the answers

The change in frequency due to the relative motion between a source and an observer is known as the _______ effect.

Doppler Signup and view all the answers

According to the Doppler effect, when a sound source is moving toward a stationary observer, what happens to the relationship between observed frequency and source frequency?

The observed frequency is higher than the source frequency. Signup and view all the answers

Match the scenario with the correct frequency shift

Source moving towards observer = Blueshift Source moving away from observer = Redshift Signup and view all the answers

A submarine emits a sonar wave at a frequency of 1500 Hz. If the submarine is moving away from a stationary object, what will happen to the observed frequency?

The observed frequency will be lower than 1500 Hz. Signup and view all the answers

COPY: Waves: Properties and Behaviors

Choose a study mode

Podcast

Questions and Answers

What happens to the amount of diffraction as the wavelength of a wave increases?

Diffraction is only noticeable when an opening is much larger than the wavelength of the wave.

What principle states that every point of a wave front can be considered a secondary source of wavelets?

When the source, obstacle, and screen are far apart, the diffraction is termed ________ diffraction.

According to Huygens' principle, how to secondary wavelets spread?

When waves encounter the edge of an obstacle, the waves do not spread out.

Match the type of diffraction with the description of source, obstacle and screen distances:

When the wavelength of the waves is smaller than the obstacle, no noticeable ________ occurs.

What is the resultant displacement when two waves with displacements $y_1$ and $y_2$ overlap?

In single-slit diffraction, what condition leads to complete darkness on a screen?

According to the principle of superposition, when two waves overlap, the resultant displacement is the product of the individual displacements.

Out-of-phase waves always reinforce each other, leading to constructive interference.

What is the term used when two waves arrive at a point in phase, reinforcing each other?

What is the term for the phenomenon where two or more waves overlap in space?

The ability to distinguish two objects through an optical instrument is limited by the ______ patterns caused by the aperture.

For total destructive interference to occur, two coherent waves of the same amplitude must be ______ out-of-phase.

What does the critical angle (θcr) for resolution depend on?

Which condition is NOT required for interference to occur?

Match the following terms with the descriptions below:

The principle of superposition only applies to mechanical waves, not electromagnetic waves.

The bright band in single slit diffraction is known as the ______ bright band.

In the context of wave interference, what does it mean for sources to be 'coherent'?

Sunlight only shows distinct colors due to refraction.

Match the terms with their descriptions:

In Young's double-slit experiment, what causes the interference pattern observed on the viewing screen?

In Young's double-slit experiment, the interference fringes are always perpendicular to the slits.

In Young's double-slit experiment, what does the value 'm' represent in the equation $y_m = \frac{Rm\lambda}{d}$?

The distance between the slits and the screen in Young's experiment is represented by the variable ____.

If the distance between the slits and the screen in Young's experiment is increased, what happens to the distance between the bright fringes?

In the given example, what is the wavelength of light calculated from the two-slit interference experiment?

In the context of radio antennas, the intensity of radiation is always uniform in all directions.

Match the terms with their descriptions in the context of Young's double-slit experiment

What is the angle, represented by θ, when m = -1 in the context of wave interference?

According to the Doppler effect, when a sound source moves away from a stationary observer, the perceived frequency is higher.

What is the relationship between frequency (f), speed of light (c), and wavelength (λ)?

The Doppler effect describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the ________ of the wave.

Match the following values of 'm' with their corresponding angles ('θ').

If the wavelength of an electromagnetic wave emitted by vibrating HCl molecule is 3.75 µm, what is the frequency?

What happens to the perceived frequency of a sound wave when the source is moving away from a stationary observer?

The Doppler effect only applies to sound waves, not light waves.

A stationary sound source emits a frequency of 400 Hz. If an observer moves towards the source, which of the following is true?

When a light source moves away from an observer, its light is blueshifted.

A car horn emits a sound at a frequency of fs. If the car is moving towards an observer with speed vs and the observer is moving towards the car with a speed vo, what is the general expression for the frequency that the observer hears?

The change in frequency due to the relative motion between a source and an observer is known as the _______ effect.

According to the Doppler effect, when a sound source is moving toward a stationary observer, what happens to the relationship between observed frequency and source frequency?

Match the scenario with the correct frequency shift

A submarine emits a sonar wave at a frequency of 1500 Hz. If the submarine is moving away from a stationary object, what will happen to the observed frequency?

More Like This

Properties of Light Quiz

P 3.3 Sound and Waves

Wave Properties and Light Reflection

Waves: Properties and Behaviors