MTG NEET Physics
The variation of photo-current with collector potential for different frequencies of incident radiation v1,v2 and v3 is as shown in the graph, then
29
Nov
The variation of photo-current with collector potential for different frequencies of incident radiation v1,v2 and v3 is as shown in the graph, then The variation of photo-current with collector potential for different frequencies of incident radiation v1 then v2 and v3 is as shown in the graph November 29, 2020 Category: Chapter 11 - Dual [...]
Light described at a place by the equation E=(100V/M)×[sin(5×10^15 s^−1)t + sin(8×10^15 s^−1)t] falls on a metal surface having work function 2.0 eV. Calculate the maximum kinetic energy of the photo electrons
29
Nov
Light described at a place by the equation E=(100V/M)×[sin(5×10^15 s^−1)t + sin(8×10^15 s^−1)t] falls on a metal surface having work function 2.0 eV. Calculate the maximum kinetic energy of the photo electrons Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from [...]
When light of wavelength λ is incident on a metal surface, stopping potential is found to be x. When light of wavelength nλ is incident on the same metal surface, stopping potential is found to be x/n+1 . Find the threshold wavelength of the metal.
29
Nov
When light of wavelength λ is incident on a metal surface, stopping potential is found to be x. When light of wavelength nλ is incident on the same metal surface, stopping potential is found to be x/n+1 . Find the threshold wavelength of the metal. stopping potential is found to be x. When light of [...]
The work function of a certain metal is hC/λ0. When a monochromatic light of wavelength λ
29
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 [...]