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What effects did scientists originally think that the intensity of light shining on a photosensitive surface would have on electrons ejected from that surface?
Scientists originally thought that the intensity of light would affect the number of electrons ejected, but not their energy. They believed that increasing the intensity would only result in more electrons being emitted from the surface, without impacting their kinetic energy.
What does light do in photoeletric effect?
In the photoelectric effect, light (photons) ejects electrons from a material's surface, creating an electric current. The energy of each photon must exceed the material's work function for electrons to be emitted. The intensity of light affects the number of electrons emitted, while the frequency determines the kinetic energy of the emitted electrons.
When light is incident on a metal surface it emits electrons What happens if the intensity of light increases?
If the intensity of light increases, more photons will be incident on the metal surface, leading to a higher rate of electron emission through the photoelectric effect. This results in a higher current of emitted electrons.
What is the effect of doubling the intensity of light on the number of electrons being emitted from a metal?
Visible light of a different frequency is a different color. Visible light of a higher frequency is closer to the violet end of the spectrum. If the frequency of a light source were increased, then the wavelength of its emission would decrease, because the product of (frequency) x (wavelength) is always the same number for all light in the same medium.
What is the power of light equation and how does it relate to the intensity of light emitted by a source?
The power of light equation is P I A, where P is power, I is intensity, and A is area. This equation shows that the power of light emitted by a source is directly proportional to the intensity of light and the area over which the light is spread. In simpler terms, the more intense the light and the larger the area it covers, the greater the power of light emitted.
How many electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent?
The number of electrons emitted when calcium is flashed with light of a certain wavelength and intensity depends on the photoelectric effect, which is related to the energy of the photons hitting the metal. Without the energy of the photons and the work function of calcium, we cannot determine the number of electrons emitted.
What effects did scientists originally think that the intensity of light shining on a photosensitive surface would have on electrons ejected from that surface?
Scientists originally thought that the intensity of light would affect the number of electrons ejected, but not their energy. They believed that increasing the intensity would only result in more electrons being emitted from the surface, without impacting their kinetic energy.
What does light do in photoeletric effect?
In the photoelectric effect, light (photons) ejects electrons from a material's surface, creating an electric current. The energy of each photon must exceed the material's work function for electrons to be emitted. The intensity of light affects the number of electrons emitted, while the frequency determines the kinetic energy of the emitted electrons.
When light is incident on a metal surface it emits electrons What happens if the intensity of light increases?
If the intensity of light increases, more photons will be incident on the metal surface, leading to a higher rate of electron emission through the photoelectric effect. This results in a higher current of emitted electrons.
What is the effect of doubling the intensity of light on the number of electrons being emitted from a metal?
Visible light of a different frequency is a different color. Visible light of a higher frequency is closer to the violet end of the spectrum. If the frequency of a light source were increased, then the wavelength of its emission would decrease, because the product of (frequency) x (wavelength) is always the same number for all light in the same medium.
How many electrons are emitted when calcium is flashed with light of wavelength 340nm and intensity of 50 percent?
This question can likely be answered using the formula E=hc/w where w is wavelength, h is Planck's constant, c is the speed of light, and E is energy in Joules. 5 electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent.
What is the power of light equation and how does it relate to the intensity of light emitted by a source?
The power of light equation is P I A, where P is power, I is intensity, and A is area. This equation shows that the power of light emitted by a source is directly proportional to the intensity of light and the area over which the light is spread. In simpler terms, the more intense the light and the larger the area it covers, the greater the power of light emitted.
When a clean surface of potassium metal is exposed to blue light electrons are emitted if the intensity of the blue light is increased what will also increase?
i have the same question on my test haha for me, the answers are: a) The number of electrons ejected per second b) the maximum kinetic energy of the ejected electrons c) the threshold frequency of the ejected electrons d) the time lag between the absorption of blue light and the start of emission of the electrons e) none of these A the number of electrons ejected per second,,,,, correct answer
How does amplitude affect color?
Amplitude does not directly affect color. Color is determined by the wavelength of light that is being reflected or emitted. Amplitude relates to the intensity or brightness of the light.
What is the relationship between intensity and brightness in the context of light perception?
The relationship between intensity and brightness in light perception is that intensity refers to the amount of light energy emitted or received, while brightness is the subjective perception of how intense the light appears to the human eye. In general, higher intensity light sources are perceived as brighter, but factors like distance and surrounding light levels can also affect brightness perception.
How does one measure light in a glow stick?
Light emitted from a glow stick can be measured using a light meter that quantifies the intensity of the emitted light. The unit of measurement for light intensity is typically in lux or lumens. By placing the light meter close to the glow stick, you can determine the brightness of the light it produces.
How does the light intensity affect the photoelectric current?
Increasing light intensity results in more photons being incident on the photoelectric material, leading to more electrons being ejected, thus increasing the photoelectric current.
