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Questions and Answers
Questions and Answers
Who developed a theory that explained the relationship between electricity and magnetism?
Who developed a theory that explained the relationship between electricity and magnetism?
- James Clerk Maxwell (correct)
- Albert Einstein
- Joseph Henry
- Michael Faraday
What is a characteristic of a longitudinal wave?
What is a characteristic of a longitudinal wave?
- The oscillations are perpendicular to the direction of wave propagation
- The oscillations are parallel to the direction of wave propagation (correct)
- The wave can be polarized
- The wave can travel through a vacuum
What is induced by a changing magnetic field?
What is induced by a changing magnetic field?
- A gravitational force
- An electromotive force (correct)
- A magnetic field
- An electric current
Who discovered the property of inductance in electrical circuits?
Who discovered the property of inductance in electrical circuits?
What type of wave requires a medium to propagate?
What type of wave requires a medium to propagate?
What is the direction of electric field lines with respect to charges?
What is the direction of electric field lines with respect to charges?
What is the unit of measurement for the intensity of sound?
What is the unit of measurement for the intensity of sound?
What is the phenomenon that causes the apparent change in frequency of a wave when the source or observer is in motion?
What is the phenomenon that causes the apparent change in frequency of a wave when the source or observer is in motion?
What type of lens is used to correct near-sightedness?
What type of lens is used to correct near-sightedness?
What is the distance between two consecutive peaks of a wave?
What is the distance between two consecutive peaks of a wave?
What is the unit of electrical power equal to one ampere under the pressure of one volt?
What is the unit of electrical power equal to one ampere under the pressure of one volt?
What happens when two waves are in phase and meet each other?
What happens when two waves are in phase and meet each other?
What occurs when two waves, one with a wavelength of 2 meters and the other with a wavelength of 4 meters, collide?
What occurs when two waves, one with a wavelength of 2 meters and the other with a wavelength of 4 meters, collide?
What is the term for the bending of light as it passes from one medium to another?
What is the term for the bending of light as it passes from one medium to another?
What is the term for an abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums?
What is the term for an abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums?
What is the term for the bending of waves around obstacles or the edges of openings?
What is the term for the bending of waves around obstacles or the edges of openings?
What is the term for the law that states the angle of incidence is equal to the angle of reflection?
What is the term for the law that states the angle of incidence is equal to the angle of reflection?
What type of image is formed by a converging lens when an object is placed beyond its focal point?
What type of image is formed by a converging lens when an object is placed beyond its focal point?
What is the result of unpolarized light passing through two filters?
What is the result of unpolarized light passing through two filters?
What is the main characteristic of Presbyopia?
What is the main characteristic of Presbyopia?
What is the phenomenon of a wave spreading out as it passes through a narrow opening?
What is the phenomenon of a wave spreading out as it passes through a narrow opening?
What is the result of combining two coherent waves with consideration for their phase difference?
What is the result of combining two coherent waves with consideration for their phase difference?
What is the color of light with the longest wavelength in the visible spectrum?
What is the color of light with the longest wavelength in the visible spectrum?
What is the defect in which the image of a distant object is formed in front or behind the retina and not at the retina itself?
What is the defect in which the image of a distant object is formed in front or behind the retina and not at the retina itself?
What happens to a ferromagnetic material when it is removed from a magnetic field?
What happens to a ferromagnetic material when it is removed from a magnetic field?
What is the direction of the induced magnetic field in paramagnetic materials?
What is the direction of the induced magnetic field in paramagnetic materials?
What is the result of an applied magnetic field on diamagnetic materials?
What is the result of an applied magnetic field on diamagnetic materials?
What is the formula to calculate the period of a wave?
What is the formula to calculate the period of a wave?
What is the interaction between particles with electric charge?
What is the interaction between particles with electric charge?
Questions and Answers
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Study Notes
Study Notes
Electromagnetism
- James Clerk Maxwell developed the theory that explained the relationship between electricity and magnetism.
Wave Characteristics
- A longitudinal wave oscillates parallel to the direction of wave propagation.
Electromagnetic Induction
- A changing magnetic field induces an electric field.
Inductance
- Joseph Henry discovered the property of inductance in electrical circuits.
Wave Propagation
- Mechanical waves require a medium to propagate.
Electric Field Lines
- Electric field lines point away from positive charges and towards negative charges.
Sound Intensity
- The intensity of sound is measured in decibels (dB).
Doppler Effect
- The Doppler effect causes the apparent change in frequency of a wave when the source or observer is in motion.
Near-sightedness
- Concave lenses are used to correct near-sightedness.
Wavelength
- The wavelength of a wave is the distance between two consecutive peaks.
Electrical Power
- The unit of electrical power is the watt (W), which is equal to one ampere under the pressure of one volt.
Wave Interference
- When two waves are in phase and meet each other they constructively interfere.
- When two waves collide, one with a wavelength of 2 meters and the other with 4 meters, they will undergo interference.
Refraction
- Refraction is the bending of light as it passes from one medium to another.
Reflection
- Reflection is an abrupt change in the direction of propagation of a wave that strikes the boundary between different mediums.
Diffraction
- Diffraction is the bending of waves around obstacles or the edges of openings.
Law of Reflection
- The law of reflection states that the angle of incidence is equal to the angle of reflection.
Converging Lens
- A converging lens forms a real, inverted image when an object is placed beyond its focal point.
Polarization
- Unpolarized light passing through two filters results in polarized light.
Presbyopia
- Presbyopia is the loss of the eye's ability to focus on near objects due to the hardening of the lens.
Huygens' Principle
- Huygens' Principle states that every point on a wavefront can be considered a source of secondary wavelets.
Interference
- Combining two coherent waves with consideration for their phase difference results in interference patterns.
Visible Spectrum
- Red light is the color of light with the longest wavelength in the visible spectrum.
Refractive Errors
- A refractive error occurs when the image of a distant object is formed in front or behind the retina and not at the retina itself.
Ferromagnetism
- When a ferromagnetic material is removed from a magnetic field, it retains some magnetization.
Paramagnetism
- The induced magnetic field in paramagnetic materials is aligned with the applied magnetic field.
Diamagnetism
- An applied magnetic field weakens the magnetic field of diamagnetic materials.
Wave Period
- The period of a wave can be calculated with the formula T = 1/f, where T is the period and f is the frequency.
Electrostatic Interaction
- The interaction between particles with electric charge is known as electrostatic interaction.
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