The transverse nature of light waves is confirmed based on the phenomenon of polarization (Option [C]). Polarization refers to the orientation of the electric field component of light waves as they propagate. When unpolarized light passes through a polarizing filter, only the component of the electrRead more
The transverse nature of light waves is confirmed based on the phenomenon of polarization (Option [C]). Polarization refers to the orientation of the electric field component of light waves as they propagate. When unpolarized light passes through a polarizing filter, only the component of the electric field aligned with the filter’s polarization axis can pass through, demonstrating that light waves oscillate perpendicular to their direction of propagation.
This behavior aligns with the characteristics of transverse waves, where oscillations occur perpendicular to the wave’s direction of travel. Polarization effects are observed in various optical phenomena, including glare reduction, 3D movie viewing with polarized glasses, and the study of light interaction with materials such as crystals.
While interference (Option [B]), double refraction (Option [A]), and reflection (Option [D]) also demonstrate various properties of light waves, they do not directly confirm the transverse nature of light waves as conclusively as polarization does. Therefore, polarization stands out as the phenomenon that unequivocally supports the transverse wave nature of light.
The wave theory of light was proposed by Huygens (Option [B]). Christiaan Huygens, a Dutch scientist, introduced this theory in the late 17th century. He postulated that light propagates as a wave through a medium known as the luminiferous aether. Huygens' wave theory provided explanations for phenoRead more
The wave theory of light was proposed by Huygens (Option [B]). Christiaan Huygens, a Dutch scientist, introduced this theory in the late 17th century. He postulated that light propagates as a wave through a medium known as the luminiferous aether. Huygens’ wave theory provided explanations for phenomena such as reflection, refraction, and diffraction, which could be understood based on the principles of wave interference and superposition.
Sir Isaac Newton (Option [A]), on the other hand, initially proposed a corpuscular theory of light, where he described light as a stream of particles. This theory had difficulty explaining certain optical behaviors but gained traction due to Newton’s reputation.
Options [C] Planck and [D] Faraday were influential in other areas of physics, particularly in quantum theory and electromagnetism, respectively, but they did not propose the wave theory of light.
Thus, Huygens is credited with pioneering the wave theory of light, which laid the foundation for modern understanding of light as an electromagnetic wave.
Light waves are classified as transverse waves (Option [A]). Transverse waves are characterized by oscillations perpendicular to the direction of energy transfer. In the case of light, electric and magnetic fields oscillate perpendicular to the direction of propagation. This wave behavior is governeRead more
Light waves are classified as transverse waves (Option [A]). Transverse waves are characterized by oscillations perpendicular to the direction of energy transfer. In the case of light, electric and magnetic fields oscillate perpendicular to the direction of propagation. This wave behavior is governed by Maxwell’s equations in classical electromagnetism.
Light waves do not exhibit longitudinal wave characteristics (Option [B]), where oscillations occur parallel to the direction of energy transfer. Longitudinal waves involve compressions and rarefactions, typical of sound waves traveling through air or other mediums.
Therefore, light waves are fundamentally transverse electromagnetic waves. They propagate through vacuum at the speed of light (approximately 3 × 10^8 meters per second) and can travel through transparent materials such as glass or water. The transverse nature of light waves allows for phenomena like polarization, interference, diffraction, and refraction, which are essential in optics and the study of light behavior. Thus, Option [A], transverse wave, accurately describes the wave nature of light.
Light is made up of small particles called "photons" (Option [D]). Photons are fundamental particles of light and electromagnetic radiation. They have zero rest mass, move at the speed of light, and carry energy proportional to their frequency. Photons exhibit properties of both particles and waves,Read more
Light is made up of small particles called “photons” (Option [D]). Photons are fundamental particles of light and electromagnetic radiation. They have zero rest mass, move at the speed of light, and carry energy proportional to their frequency. Photons exhibit properties of both particles and waves, as described by quantum mechanics. They interact with matter through processes such as absorption, emission, and scattering.
Atoms (Option [A]) are the basic units of matter composed of protons, neutrons, and electrons. Neutrons (Option [B]) are subatomic particles found in atomic nuclei. Positrons (Option [C]) are antimatter particles with the same mass as electrons but a positive charge. These options do not describe the fundamental particles of light. Therefore, photons are uniquely responsible for the transmission and interaction of electromagnetic radiation, making them the essential constituents of light according to modern physics.
The unit of measurement of sound intensity is the Decibel (dB). Decibel is a logarithmic unit used to quantify the intensity or loudness of sound. It represents the ratio of a sound pressure level to a reference level, typically the threshold of human hearing at 1 kHz. The decibel scale is logarithmRead more
The unit of measurement of sound intensity is the Decibel (dB). Decibel is a logarithmic unit used to quantify the intensity or loudness of sound. It represents the ratio of a sound pressure level to a reference level, typically the threshold of human hearing at 1 kHz. The decibel scale is logarithmic because the human perception of sound intensity covers a wide range, from the faintest sound we can hear to the threshold of pain.
The decibel scale allows us to express both very large and very small values of sound intensity conveniently. For example, normal conversation might range around 60-70 dB, while a jet engine at close range could exceed 140 dB. Decibels are used in various fields including acoustics, engineering, environmental noise monitoring, and occupational health and safety.
Options [B] Fathom and [C] Arg are not units of measurement for sound intensity. Therefore, among the options provided, the correct answer for the unit of measurement of sound intensity is the Decibel (dB).
On the basis of which of the following phenomena, the transverse nature of light waves is confirmed?
The transverse nature of light waves is confirmed based on the phenomenon of polarization (Option [C]). Polarization refers to the orientation of the electric field component of light waves as they propagate. When unpolarized light passes through a polarizing filter, only the component of the electrRead more
The transverse nature of light waves is confirmed based on the phenomenon of polarization (Option [C]). Polarization refers to the orientation of the electric field component of light waves as they propagate. When unpolarized light passes through a polarizing filter, only the component of the electric field aligned with the filter’s polarization axis can pass through, demonstrating that light waves oscillate perpendicular to their direction of propagation.
This behavior aligns with the characteristics of transverse waves, where oscillations occur perpendicular to the wave’s direction of travel. Polarization effects are observed in various optical phenomena, including glare reduction, 3D movie viewing with polarized glasses, and the study of light interaction with materials such as crystals.
While interference (Option [B]), double refraction (Option [A]), and reflection (Option [D]) also demonstrate various properties of light waves, they do not directly confirm the transverse nature of light waves as conclusively as polarization does. Therefore, polarization stands out as the phenomenon that unequivocally supports the transverse wave nature of light.
See lessBy whom was the wave theory of light proposed?
The wave theory of light was proposed by Huygens (Option [B]). Christiaan Huygens, a Dutch scientist, introduced this theory in the late 17th century. He postulated that light propagates as a wave through a medium known as the luminiferous aether. Huygens' wave theory provided explanations for phenoRead more
The wave theory of light was proposed by Huygens (Option [B]). Christiaan Huygens, a Dutch scientist, introduced this theory in the late 17th century. He postulated that light propagates as a wave through a medium known as the luminiferous aether. Huygens’ wave theory provided explanations for phenomena such as reflection, refraction, and diffraction, which could be understood based on the principles of wave interference and superposition.
Sir Isaac Newton (Option [A]), on the other hand, initially proposed a corpuscular theory of light, where he described light as a stream of particles. This theory had difficulty explaining certain optical behaviors but gained traction due to Newton’s reputation.
Options [C] Planck and [D] Faraday were influential in other areas of physics, particularly in quantum theory and electromagnetism, respectively, but they did not propose the wave theory of light.
Thus, Huygens is credited with pioneering the wave theory of light, which laid the foundation for modern understanding of light as an electromagnetic wave.
See lessWhat type of wave is light wave?
Light waves are classified as transverse waves (Option [A]). Transverse waves are characterized by oscillations perpendicular to the direction of energy transfer. In the case of light, electric and magnetic fields oscillate perpendicular to the direction of propagation. This wave behavior is governeRead more
Light waves are classified as transverse waves (Option [A]). Transverse waves are characterized by oscillations perpendicular to the direction of energy transfer. In the case of light, electric and magnetic fields oscillate perpendicular to the direction of propagation. This wave behavior is governed by Maxwell’s equations in classical electromagnetism.
Light waves do not exhibit longitudinal wave characteristics (Option [B]), where oscillations occur parallel to the direction of energy transfer. Longitudinal waves involve compressions and rarefactions, typical of sound waves traveling through air or other mediums.
Therefore, light waves are fundamentally transverse electromagnetic waves. They propagate through vacuum at the speed of light (approximately 3 × 10^8 meters per second) and can travel through transparent materials such as glass or water. The transverse nature of light waves allows for phenomena like polarization, interference, diffraction, and refraction, which are essential in optics and the study of light behavior. Thus, Option [A], transverse wave, accurately describes the wave nature of light.
See lessLight is made up of small particles, which are called
Light is made up of small particles called "photons" (Option [D]). Photons are fundamental particles of light and electromagnetic radiation. They have zero rest mass, move at the speed of light, and carry energy proportional to their frequency. Photons exhibit properties of both particles and waves,Read more
Light is made up of small particles called “photons” (Option [D]). Photons are fundamental particles of light and electromagnetic radiation. They have zero rest mass, move at the speed of light, and carry energy proportional to their frequency. Photons exhibit properties of both particles and waves, as described by quantum mechanics. They interact with matter through processes such as absorption, emission, and scattering.
Atoms (Option [A]) are the basic units of matter composed of protons, neutrons, and electrons. Neutrons (Option [B]) are subatomic particles found in atomic nuclei. Positrons (Option [C]) are antimatter particles with the same mass as electrons but a positive charge. These options do not describe the fundamental particles of light. Therefore, photons are uniquely responsible for the transmission and interaction of electromagnetic radiation, making them the essential constituents of light according to modern physics.
See lessThe unit of measurement of sound intensity is
The unit of measurement of sound intensity is the Decibel (dB). Decibel is a logarithmic unit used to quantify the intensity or loudness of sound. It represents the ratio of a sound pressure level to a reference level, typically the threshold of human hearing at 1 kHz. The decibel scale is logarithmRead more
The unit of measurement of sound intensity is the Decibel (dB). Decibel is a logarithmic unit used to quantify the intensity or loudness of sound. It represents the ratio of a sound pressure level to a reference level, typically the threshold of human hearing at 1 kHz. The decibel scale is logarithmic because the human perception of sound intensity covers a wide range, from the faintest sound we can hear to the threshold of pain.
The decibel scale allows us to express both very large and very small values of sound intensity conveniently. For example, normal conversation might range around 60-70 dB, while a jet engine at close range could exceed 140 dB. Decibels are used in various fields including acoustics, engineering, environmental noise monitoring, and occupational health and safety.
Options [B] Fathom and [C] Arg are not units of measurement for sound intensity. Therefore, among the options provided, the correct answer for the unit of measurement of sound intensity is the Decibel (dB).
See less