In the photon nature of light, the intensity of light is determined by the number of photons incident per unit area per second. A higher photon count corresponds to greater energy delivery, thereby increasing the light's intensity. For more visit here: https://www.tiwariacademy.com/ncert-solutions/cRead more
In the photon nature of light, the intensity of light is determined by the number of photons incident per unit area per second. A higher photon count corresponds to greater energy delivery, thereby increasing the light’s intensity.
In the photon picture of light, the intensity of radiation is defined as the energy delivered per unit area per unit time by the photons. It is proportional to the number of photons striking a surface per second. Its SI unit is Watt per square meter (W/m²). For more visit here: https://www.tiwariacaRead more
In the photon picture of light, the intensity of radiation is defined as the energy delivered per unit area per unit time by the photons. It is proportional to the number of photons striking a surface per second. Its SI unit is Watt per square meter (W/m²).
For a photosensitive material with constant frequency of incident radiation, the photocurrent increases linearly with the intensity of incident light. This is because a higher intensity of light emits more photons, leading to the ejection of more photoelectrons, thus increasing the photocurrent. ForRead more
For a photosensitive material with constant frequency of incident radiation, the photocurrent increases linearly with the intensity of incident light. This is because a higher intensity of light emits more photons, leading to the ejection of more photoelectrons, thus increasing the photocurrent.
Photoelectric emission occurs only if the frequency of incident light exceeds the material's threshold frequency. Below this frequency, photons lack sufficient energy to overcome the work function, the minimum energy required to eject electrons from the material's surface, making emission impossibleRead more
Photoelectric emission occurs only if the frequency of incident light exceeds the material’s threshold frequency. Below this frequency, photons lack sufficient energy to overcome the work function, the minimum energy required to eject electrons from the material’s surface, making emission impossible.
No, not all electrons that absorb a photon are ejected as photoelectrons. Only electrons that gain energy equal to or greater than the material's work function can escape. Others lose energy through collisions or remain bound within the material. For more visit here: https://www.tiwariacademy.com/ncRead more
No, not all electrons that absorb a photon are ejected as photoelectrons. Only electrons that gain energy equal to or greater than the material’s work function can escape. Others lose energy through collisions or remain bound within the material.
(i) The stopping potential does not depend on the intensity of the incident radiation, as intensity affects the number of photoelectrons, not their energy. (ii) The stopping potential depends on the frequency of the incident radiation because higher frequency photons impart more energy to the emitteRead more
(i) The stopping potential does not depend on the intensity of the incident radiation, as intensity affects the number of photoelectrons, not their energy.
(ii) The stopping potential depends on the frequency of the incident radiation because higher frequency photons impart more energy to the emitted electrons, requiring greater potential to stop them.
The maximum kinetic energy of photoelectrons is given by K.E. = e × V, where e is the electron charge (1.6 × 10⁻¹⁹ C) and V is the stopping potential. Thus, K.E. = 1.6 × 10⁻¹⁹ × 1.5 = 2.4 × 10⁻¹⁹ J. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
The maximum kinetic energy of photoelectrons is given by K.E. = e × V, where e is the electron charge (1.6 × 10⁻¹⁹ C) and V is the stopping potential. Thus, K.E. = 1.6 × 10⁻¹⁹ × 1.5 = 2.4 × 10⁻¹⁹ J.
(1) Electrons will not be emitted with red light because its frequency is lower than green and yellow light, providing insufficient energy. (2) Electrons will be emitted with blue light as its frequency is higher than green light, exceeding the threshold frequency. For more visit here: https://www.tRead more
(1) Electrons will not be emitted with red light because its frequency is lower than green and yellow light, providing insufficient energy.
(2) Electrons will be emitted with blue light as its frequency is higher than green light, exceeding the threshold frequency.
State one factor which determines the intensity of light in the photon nature of light.
In the photon nature of light, the intensity of light is determined by the number of photons incident per unit area per second. A higher photon count corresponds to greater energy delivery, thereby increasing the light's intensity. For more visit here: https://www.tiwariacademy.com/ncert-solutions/cRead more
In the photon nature of light, the intensity of light is determined by the number of photons incident per unit area per second. A higher photon count corresponds to greater energy delivery, thereby increasing the light’s intensity.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
Define intensity of radiation in photon picture of light. Write its SI unit.
In the photon picture of light, the intensity of radiation is defined as the energy delivered per unit area per unit time by the photons. It is proportional to the number of photons striking a surface per second. Its SI unit is Watt per square meter (W/m²). For more visit here: https://www.tiwariacaRead more
In the photon picture of light, the intensity of radiation is defined as the energy delivered per unit area per unit time by the photons. It is proportional to the number of photons striking a surface per second. Its SI unit is Watt per square meter (W/m²).
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
For a given photosensitive material and with a source of constant frequency of incident radiation, how does the photocurrent vary with the intensity of incident light?
For a photosensitive material with constant frequency of incident radiation, the photocurrent increases linearly with the intensity of incident light. This is because a higher intensity of light emits more photons, leading to the ejection of more photoelectrons, thus increasing the photocurrent. ForRead more
For a photosensitive material with constant frequency of incident radiation, the photocurrent increases linearly with the intensity of incident light. This is because a higher intensity of light emits more photons, leading to the ejection of more photoelectrons, thus increasing the photocurrent.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
Why is photoelectric emission not possible at all frequencies?
Photoelectric emission occurs only if the frequency of incident light exceeds the material's threshold frequency. Below this frequency, photons lack sufficient energy to overcome the work function, the minimum energy required to eject electrons from the material's surface, making emission impossibleRead more
Photoelectric emission occurs only if the frequency of incident light exceeds the material’s threshold frequency. Below this frequency, photons lack sufficient energy to overcome the work function, the minimum energy required to eject electrons from the material’s surface, making emission impossible.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
Do all the electrons that absorb a photon come out as photoelectrons?
No, not all electrons that absorb a photon are ejected as photoelectrons. Only electrons that gain energy equal to or greater than the material's work function can escape. Others lose energy through collisions or remain bound within the material. For more visit here: https://www.tiwariacademy.com/ncRead more
No, not all electrons that absorb a photon are ejected as photoelectrons. Only electrons that gain energy equal to or greater than the material’s work function can escape. Others lose energy through collisions or remain bound within the material.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
Does the ‘stopping potential’ in photoelectric emission depend upon (i) the intensity of the incident radiation in a photocell? (ii) the frequency of the incident radiation?
(i) The stopping potential does not depend on the intensity of the incident radiation, as intensity affects the number of photoelectrons, not their energy. (ii) The stopping potential depends on the frequency of the incident radiation because higher frequency photons impart more energy to the emitteRead more
(i) The stopping potential does not depend on the intensity of the incident radiation, as intensity affects the number of photoelectrons, not their energy.
(ii) The stopping potential depends on the frequency of the incident radiation because higher frequency photons impart more energy to the emitted electrons, requiring greater potential to stop them.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
The stopping potential in an experiment on photoelectric effect is 1.5 V. What is the maximum kinetic energy of the photoelectrons emitted?
The maximum kinetic energy of photoelectrons is given by K.E. = e × V, where e is the electron charge (1.6 × 10⁻¹⁹ C) and V is the stopping potential. Thus, K.E. = 1.6 × 10⁻¹⁹ × 1.5 = 2.4 × 10⁻¹⁹ J. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
The maximum kinetic energy of photoelectrons is given by K.E. = e × V, where e is the electron charge (1.6 × 10⁻¹⁹ C) and V is the stopping potential. Thus, K.E. = 1.6 × 10⁻¹⁹ × 1.5 = 2.4 × 10⁻¹⁹ J.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/
Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (1) red light, and (ii) blue light?
(1) Electrons will not be emitted with red light because its frequency is lower than green and yellow light, providing insufficient energy. (2) Electrons will be emitted with blue light as its frequency is higher than green light, exceeding the threshold frequency. For more visit here: https://www.tRead more
(1) Electrons will not be emitted with red light because its frequency is lower than green and yellow light, providing insufficient energy.
(2) Electrons will be emitted with blue light as its frequency is higher than green light, exceeding the threshold frequency.
For more visit here:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-11/