Part 2
The work function of a certain metal is hC/λ0. When a monochromatic light of wavelength λ
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Nov
The work function of a certain metal is hC/λ0. When a monochromatic light of wavelength λ The work function of a certain metal is hC/λ0. When a monochromatic light of wavelength λ November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter , MTG NEET Physics , Part 2 ,
Two separate monochromatic light beams A and B of the same intensity (energy per unit time) are falling normally on a unit area of a metallic surface. Their wavelength are λA and λB respectively. Assuming that all the the incident light is used in ejecting the photoelectrons, the ratio of the number of photoelectrons from beam A to that from B is
29
Nov
Two separate monochromatic light beams A and B of the same intensity (energy per unit time) are falling normally on a unit area of a metallic surface. Their wavelength are λA and λB respectively. Assuming that all the the incident light is used in ejecting the photoelectrons, the ratio of the number of photoelectrons from [...]
Light of two different frequencies whose photons have energies of 2 eV and 5.0 eV are incident one by one on a metal surface of work function 1.5 eV. The ratio of maximum energies of emitted electrons will be
29
Nov
Light of two different frequencies whose photons have energies of 2 eV and 5.0 eV are incident one by one on a metal surface of work function 1.5 eV. The ratio of maximum energies of emitted electrons will be Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. [...]
When light of frequency v1 is incident on a metal with work function W (where hv1 > W), the photocurrent falls to zero at a stopping potential of V1. If the frequency of light is increased to v2, the stopping potential changes to V2. Therefore, the charge of an electron is given by
29
Nov
When light of frequency v1 is incident on a metal with work function W (where hv1 > W), the photocurrent falls to zero at a stopping potential of V1. If the frequency of light is increased to v2, the stopping potential changes to V2. Therefore, the charge of an electron is given by the charge [...]
Which of the following graph shown relation between maximum kinetic energy and intensity I of incident light of photocell ?
29
Nov
Which of the following graph shown relation between maximum kinetic energy and intensity I of incident light of photocell ? Which of the following graph shown relation between maximum kinetic energy and intensity I of incident light of photocell ? November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter , MTG [...]
If Kinetic energy of the emitted electrons is zero when light of wavelength 686 nm. Then wavelength of radiations emitted by electron having energy 1.81 eV will be. ( Given work function of Cesium = 1.81 eV)
29
Nov
If Kinetic energy of the emitted electrons is zero when light of wavelength 686 nm. Then wavelength of radiations emitted by electron having energy 1.81 eV will be. ( Given work function of Cesium = 1.81 eV) Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum [...]
When a photosensitive surface is illuminated with light of wavelength lambda , the stopping potential is v0. But when light of wavelength 2 lambda is incident on the same surface, the stopping potential is V0/8. What is the threshold wavelength for the surface ?
29
Nov
When a photosensitive surface is illuminated with light of wavelength lambda , the stopping potential is v0. But when light of wavelength 2 lambda is incident on the same surface, the stopping potential is V0/8. What is the threshold wavelength for the surface ? the stopping potential is v0. But when light of wavelength 2 [...]
Light of wavelength 0.6 mm from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V. With light of wavelength 0.4 mm from a sodium lamp, the stopping potential is 1.5 V. With this data, the value of h/e is:
29
Nov
Light of wavelength 0.6 mm from a sodium lamp falls on a photocell and causes the emission of photoelectrons for which the stopping potential is 0.5 V. With light of wavelength 0.4 mm from a sodium lamp, the stopping potential is 1.5 V. With this data, the value of h/e is: Ultraviolet beam of wavelength [...]
The threshold frequency of the metal of the cathode in a photoelectric cell is 1×10^15Hz. When a certain beam of light is incident on the cathode, it is found that a stopping potential 4.144 V is required to reduce the current to zero. The frequency of the incident radiation is
29
Nov
The threshold frequency of the metal of the cathode in a photoelectric cell is 1×10^15Hz. When a certain beam of light is incident on the cathode, it is found that a stopping potential 4.144 V is required to reduce the current to zero. The frequency of the incident radiation is it is found that a [...]
In an experiment of photoelectric effect the stopping potential was measured to be V1 and V2 volts with incident light of wavelength λ and λ/2, respectively. The relation between V1 and V2 may be
29
Nov
In an experiment of photoelectric effect the stopping potential was measured to be V1 and V2 volts with incident light of wavelength λ and λ/2, respectively. The relation between V1 and V2 may be In an experiment of photoelectric effect the stopping potential was measured to be V1 and V2 volts with incident light of [...]