When an army crosses a bridge, soldiers are instructed not to march in step to avoid the danger of the bridge collapsing due to resonance; option [B]. Resonance occurs when the frequency of the soldiers' synchronized steps matches the bridge's natural frequency, causing the vibrations to amplify sigRead more
When an army crosses a bridge, soldiers are instructed not to march in step to avoid the danger of the bridge collapsing due to resonance; option [B]. Resonance occurs when the frequency of the soldiers’ synchronized steps matches the bridge’s natural frequency, causing the vibrations to amplify significantly. This can lead to large oscillations and potentially catastrophic structural failure of the bridge. Marching in step, especially if the bridge is long or has a specific structural design, can inadvertently set up these dangerous oscillations. This precaution is crucial because historical incidents have demonstrated that even well-built bridges can succumb to resonant vibrations under synchronized forces. By breaking step, the soldiers create irregular, non-periodic forces on the bridge, which minimizes the risk of resonance and ensures the structural integrity of the bridge remains intact during the crossing.
Sound waves cannot propagate in a vacuum. This is because sound waves are mechanical waves that require a medium, such as air, water, or solid material, to travel through. Sound waves are longitudinal waves, where the oscillation of the particles in the medium is parallel to the direction of wave prRead more
Sound waves cannot propagate in a vacuum. This is because sound waves are mechanical waves that require a medium, such as air, water, or solid material, to travel through.
Sound waves are longitudinal waves, where the oscillation of the particles in the medium is parallel to the direction of wave propagation. Unlike sound waves, light waves are electromagnetic waves that can travel through the vacuum of space without requiring a medium.
The reason sound waves cannot be transmitted through a vacuum is that there are no particles or molecules present in a vacuum to transmit the vibrations that create sound waves. In contrast, electromagnetic waves like light can propagate through the empty space of a vacuum, as they do not rely on the presence of a medium to travel.
Therefore, the correct answer is option (C) Sound, as sound waves are the only type of wave mentioned that cannot propagate in a vacuum.
The photoelectric effect was proposed by Einstein (Option [C]). In 1905, Albert Einstein provided a groundbreaking explanation for the photoelectric effect, where electrons are ejected from a material's surface when illuminated by light. He proposed that light consists of discrete packets of energyRead more
The photoelectric effect was proposed by Einstein (Option [C]). In 1905, Albert Einstein provided a groundbreaking explanation for the photoelectric effect, where electrons are ejected from a material’s surface when illuminated by light. He proposed that light consists of discrete packets of energy called photons, and each photon transfers its energy to an electron, enabling it to escape from the material. This theory introduced the concept of the photon as a quantum of light and challenged the classical wave theory of light.
Options [A] Compton, [B] Maxwell, and [D] Newton made significant contributions to physics, but they are not credited with explaining the photoelectric effect. Compton is known for the Compton effect involving X-rays, Maxwell formulated Maxwell’s equations describing electromagnetism, and Newton proposed the corpuscular theory of light.
Einstein’s explanation of the photoelectric effect laid the foundation for quantum mechanics and led to further advancements in understanding the dual wave-particle nature of light, influencing modern physics profoundly.
The first person to demonstrate that diffraction of light waves occurs was Young (Option [B]). Thomas Young, an English scientist, conducted the famous double-slit experiment in the early 19th century. In this experiment, he observed interference patterns produced by light passing through two closelRead more
The first person to demonstrate that diffraction of light waves occurs was Young (Option [B]). Thomas Young, an English scientist, conducted the famous double-slit experiment in the early 19th century. In this experiment, he observed interference patterns produced by light passing through two closely spaced slits, providing direct evidence of light behaving as a wave. Diffraction patterns formed when light waves passed through small openings or around edges, demonstrating wave-like characteristics such as interference and diffraction.
Option [A], Gramaldi, is not associated with contributions to optics or light phenomena. Option [C], Maxwell, formulated Maxwell’s equations describing electromagnetism. Option [D], Foucault, made significant contributions to optics and physics, but he is known for his work on the speed of light and pendulum experiments.
Therefore, Thomas Young’s double-slit experiment established the phenomenon of light diffraction, crucial in demonstrating that light exhibits wave properties, laying the groundwork for the wave theory of light and advancing our understanding of optics and wave behavior.
The electromagnetic nature of light was discovered by Maxwell (Option [C]). James Clerk Maxwell, a Scottish physicist, formulated Maxwell's equations in the mid-19th century. These equations unified electricity and magnetism, predicting the existence of electromagnetic waves, including light. MaxwelRead more
The electromagnetic nature of light was discovered by Maxwell (Option [C]). James Clerk Maxwell, a Scottish physicist, formulated Maxwell’s equations in the mid-19th century. These equations unified electricity and magnetism, predicting the existence of electromagnetic waves, including light. Maxwell demonstrated that light is an electromagnetic wave propagating through space at the speed of light, and his work laid the foundation for understanding the fundamental relationship between electricity, magnetism, and light.
Option [A], Snell, is known for Snell’s law of refraction, describing how light bends when passing through different materials. Option [B], Newton, proposed the corpuscular theory of light, suggesting light as a stream of particles. Option [D], Young, conducted experiments demonstrating the wave nature of light through his double-slit experiment, contributing to the understanding of light as waves.
Thus, James Clerk Maxwell is credited with discovering the electromagnetic nature of light, revolutionizing physics with his unified theory of electromagnetism.
When the army crosses a bridge, the soldiers are instructed not to march in step because
When an army crosses a bridge, soldiers are instructed not to march in step to avoid the danger of the bridge collapsing due to resonance; option [B]. Resonance occurs when the frequency of the soldiers' synchronized steps matches the bridge's natural frequency, causing the vibrations to amplify sigRead more
When an army crosses a bridge, soldiers are instructed not to march in step to avoid the danger of the bridge collapsing due to resonance; option [B]. Resonance occurs when the frequency of the soldiers’ synchronized steps matches the bridge’s natural frequency, causing the vibrations to amplify significantly. This can lead to large oscillations and potentially catastrophic structural failure of the bridge. Marching in step, especially if the bridge is long or has a specific structural design, can inadvertently set up these dangerous oscillations. This precaution is crucial because historical incidents have demonstrated that even well-built bridges can succumb to resonant vibrations under synchronized forces. By breaking step, the soldiers create irregular, non-periodic forces on the bridge, which minimizes the risk of resonance and ensures the structural integrity of the bridge remains intact during the crossing.
See lessWhich waves cannot propagate in vacuum?
Sound waves cannot propagate in a vacuum. This is because sound waves are mechanical waves that require a medium, such as air, water, or solid material, to travel through. Sound waves are longitudinal waves, where the oscillation of the particles in the medium is parallel to the direction of wave prRead more
Sound waves cannot propagate in a vacuum. This is because sound waves are mechanical waves that require a medium, such as air, water, or solid material, to travel through.
See lessSound waves are longitudinal waves, where the oscillation of the particles in the medium is parallel to the direction of wave propagation. Unlike sound waves, light waves are electromagnetic waves that can travel through the vacuum of space without requiring a medium.
The reason sound waves cannot be transmitted through a vacuum is that there are no particles or molecules present in a vacuum to transmit the vibrations that create sound waves. In contrast, electromagnetic waves like light can propagate through the empty space of a vacuum, as they do not rely on the presence of a medium to travel.
Therefore, the correct answer is option (C) Sound, as sound waves are the only type of wave mentioned that cannot propagate in a vacuum.
Photoelectric effect was proposed by
The photoelectric effect was proposed by Einstein (Option [C]). In 1905, Albert Einstein provided a groundbreaking explanation for the photoelectric effect, where electrons are ejected from a material's surface when illuminated by light. He proposed that light consists of discrete packets of energyRead more
The photoelectric effect was proposed by Einstein (Option [C]). In 1905, Albert Einstein provided a groundbreaking explanation for the photoelectric effect, where electrons are ejected from a material’s surface when illuminated by light. He proposed that light consists of discrete packets of energy called photons, and each photon transfers its energy to an electron, enabling it to escape from the material. This theory introduced the concept of the photon as a quantum of light and challenged the classical wave theory of light.
Options [A] Compton, [B] Maxwell, and [D] Newton made significant contributions to physics, but they are not credited with explaining the photoelectric effect. Compton is known for the Compton effect involving X-rays, Maxwell formulated Maxwell’s equations describing electromagnetism, and Newton proposed the corpuscular theory of light.
Einstein’s explanation of the photoelectric effect laid the foundation for quantum mechanics and led to further advancements in understanding the dual wave-particle nature of light, influencing modern physics profoundly.
See lessWho first showed that diffraction of light waves occurs?
The first person to demonstrate that diffraction of light waves occurs was Young (Option [B]). Thomas Young, an English scientist, conducted the famous double-slit experiment in the early 19th century. In this experiment, he observed interference patterns produced by light passing through two closelRead more
The first person to demonstrate that diffraction of light waves occurs was Young (Option [B]). Thomas Young, an English scientist, conducted the famous double-slit experiment in the early 19th century. In this experiment, he observed interference patterns produced by light passing through two closely spaced slits, providing direct evidence of light behaving as a wave. Diffraction patterns formed when light waves passed through small openings or around edges, demonstrating wave-like characteristics such as interference and diffraction.
Option [A], Gramaldi, is not associated with contributions to optics or light phenomena. Option [C], Maxwell, formulated Maxwell’s equations describing electromagnetism. Option [D], Foucault, made significant contributions to optics and physics, but he is known for his work on the speed of light and pendulum experiments.
Therefore, Thomas Young’s double-slit experiment established the phenomenon of light diffraction, crucial in demonstrating that light exhibits wave properties, laying the groundwork for the wave theory of light and advancing our understanding of optics and wave behavior.
See lessWho discovered the electromagnetic nature of light?
The electromagnetic nature of light was discovered by Maxwell (Option [C]). James Clerk Maxwell, a Scottish physicist, formulated Maxwell's equations in the mid-19th century. These equations unified electricity and magnetism, predicting the existence of electromagnetic waves, including light. MaxwelRead more
The electromagnetic nature of light was discovered by Maxwell (Option [C]). James Clerk Maxwell, a Scottish physicist, formulated Maxwell’s equations in the mid-19th century. These equations unified electricity and magnetism, predicting the existence of electromagnetic waves, including light. Maxwell demonstrated that light is an electromagnetic wave propagating through space at the speed of light, and his work laid the foundation for understanding the fundamental relationship between electricity, magnetism, and light.
Option [A], Snell, is known for Snell’s law of refraction, describing how light bends when passing through different materials. Option [B], Newton, proposed the corpuscular theory of light, suggesting light as a stream of particles. Option [D], Young, conducted experiments demonstrating the wave nature of light through his double-slit experiment, contributing to the understanding of light as waves.
Thus, James Clerk Maxwell is credited with discovering the electromagnetic nature of light, revolutionizing physics with his unified theory of electromagnetism.
See less