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How can electron emit radio photon Really are photons emitted only by electrons jumping from higher to lower energy levels?
Electrons can emit radio photons when they undergo acceleration or deceleration, causing their energy to change and emit energy in the form of radio photons. Photons are also emitted when electrons transition between different energy levels, as in atomic or molecular systems. So, photons are not only emitted by electrons jumping between energy levels, but also by their acceleration or deceleration.
How did Einstein used Plank' theory to explain the existence of threshold frequency?
Einstein used Planck's theory of quantization to explain the photoelectric effect by proposing that light is quantized into packets of energy called photons. These photons have energy proportional to their frequency, and when light with frequency below the threshold frequency interacts with a metal surface, no electrons are emitted. Above the threshold frequency, each photon can transfer enough energy to overcome the work function of the metal, causing electrons to be emitted.
Why are x- rays more penetrating than visible light waves?
Higher frequency photons have more energy than lower frequency photons.
To say that energy levels in an atom are discrete is to say the energy levels are well defined and?
quantized, meaning they can only have certain specific values. This quantization results in distinct energy levels for electrons in an atom, leading to the emission or absorption of photons when electrons transition between these levels.
Which subatomic particle of the atom in a molecule interacts with photons?
Electrons are the subatomic particles in an atom that interact with photons. When photons interact with electrons, they can be absorbed, emitted, or scattered, leading to various chemical and physical processes in a molecule.
Why for a particular metal electrons are emitted only when the frequency of the incident radiation is greater than a certain value?
Electrons are emitted from a metal surface when the energy of the incident photons is great enough to overcome the work function of the metal. This minimum energy required is equivalent to a certain threshold frequency, known as the threshold frequency. Electrons can only be emitted when the frequency of the incident radiation is greater than this threshold frequency because lower frequency photons do not possess enough energy to overcome the work function and release electrons from the metal surface.
Does photoelectric effect take place below threshold frequency?
No, the photoelectric effect only occurs when the frequency of incident light is equal to or greater than the threshold frequency. Below the threshold frequency, photons do not possess enough energy to eject electrons from a material.
Why is it not possible to get electrons from metal even when light of high frequency fall on its surface?
High-frequency light can cause electrons to be emitted from a metal's surface through the photoelectric effect. However, if the energy of the photons is still not high enough to overcome the metal's work function (the minimum energy needed to release an electron), then electrons cannot be emitted.
According to the particle model of light certain kinds of light cannot eject electrons from metals because?
they do not possess enough energy in their individual particles, known as photons, to overcome the work function of the metal and eject electrons. The energy of the photons is directly related to their frequency, with higher frequency light having greater energy. This is why only light with sufficient energy, typically ultraviolet or higher frequency, can eject electrons from metals in the photoelectric effect.
What three experimental facts about the photoelectric effect could only be explained by atoms idea of atoms absorbing photons a certain energy?
Threshold frequency: The observation that electrons are only emitted when the incident light exceeds a certain frequency, regardless of intensity, supports the idea of atoms absorbing photons of specific energies to release electrons. Stopping potential: The linear relationship between stopping potential and frequency of incident light suggests that electrons gain a fixed amount of energy from absorbing individual photons with discrete energies. Photoelectric current: The instantaneous emission of electrons upon light exposure and the immediate halt of current when light is turned off indicates the discrete nature of photon absorption by atoms, supporting the quantized energy transfer.
Why does backing volts depend on the frequency of light?
The backing voltage used in a photomultiplier tube depends on the frequency of light because higher frequency light photons require a higher energy to eject electrons from the cathode, while lower frequency light photons require less energy. By adjusting the backing voltage, the tube can amplify the signal produced by the ejected electrons accordingly.
What 3 experimental facts about the photoelectric effect could only be explained by the idea of atoms absorbing photons of lights of a certain energy?
The existence of a threshold frequency below which no electrons were emitted. The direct proportionality between the frequency of incident light and the kinetic energy of emitted electrons. The instantaneous emission of electrons once the threshold frequency was surpassed, rather than a delayed response as would be expected in a classical wave model.
What is the effect of frequency of incident light on photoelectric current?
The photoelectric effect is based on two principles. 1. The intensity or brightness of the visible light (number of photons): The higher the intensity (larger number of photons) determines the number of electrons that are released from the surface material. 2. The frequency of visible light (wavelength): The higher the frequency a beam of light has when it strikes the surface determines the speed (kinetic energy) of the electrons that are ejected from the material. This is independent from light intensity. The higher the frequency of the light, the higher the energy of the electrons emitted, and thus, the higher the current of the circuit.
Which phenomenon can only be explained by assuming that light is quantized?
The photoelectric effect is a phenomenon that can only be explained by assuming that light is quantized. In this effect, electrons are ejected from a material when it is exposed to light of a certain frequency. The energy of the ejected electrons is dependent on the frequency of the light, supporting the idea that light is made up of discrete packets of energy called photons.
Use Einstein photoelectric equation to explain Why for a particular metal electrons are emitted only when the frequency of the incident radiation is greater than a certain value?
The photoelectric effect occurs when photons with sufficient energy strike a metal surface, causing electrons to be emitted. According to the Einstein photoelectric equation, the energy of the emitted electron is equal to the energy of the incident photon minus the work function of the metal. Therefore, only photons with energy greater than the work function of the metal can overcome the binding energy of the electrons and cause emission. This is why electrons are emitted only when the frequency (or energy) of the incident radiation is greater than a certain value.
How can electron emit radio photon Really are photons emitted only by electrons jumping from higher to lower energy levels?
Electrons can emit radio photons when they undergo acceleration or deceleration, causing their energy to change and emit energy in the form of radio photons. Photons are also emitted when electrons transition between different energy levels, as in atomic or molecular systems. So, photons are not only emitted by electrons jumping between energy levels, but also by their acceleration or deceleration.
What is the relationship between frequency and kinetic energy in photoelectric effect?
In the photoelectric effect, increasing the frequency of incident light increases the kinetic energy of the emitted electrons. This is because higher frequency light photons carry more energy, which can be transferred to the electrons during the photoelectric effect.
