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Which of the followinng configuration is correct for iron (a) 1s^2 2s^2 2p^6 3p^6 3d^5 (b) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5
29
Nov
Which of the followinng configuration is correct for iron (a) 1s^2 2s^2 2p^6 3p^6 3d^5 (b) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5 Which of the followinng configuration is correct for iron (a) 1s^2 2s^2 2p^6 3p^6 3d^5 (b) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^5 November 29, 2020 Category: Uncategorised (JEE Advanced Physics by [...]
A beam of light consists of four wavelength 4000Å, 4800A, 6000A and 7000Å, each of intensity 1.5×10^−3Wm^−2. The beam falls normally on an area 10^−4m^2 of a clean metallic surface of work function 1.9eV. Assuming no loss of light energy (i.e. each capable photon emits one electron) calculate the number of photoelectrons liberated per second.
29
Nov
A beam of light consists of four wavelength 4000Å, 4800A, 6000A and 7000Å, each of intensity 1.5×10^−3Wm^−2. The beam falls normally on an area 10^−4m^2 of a clean metallic surface of work function 1.9eV. Assuming no loss of light energy (i.e. each capable photon emits one electron) calculate the number of photoelectrons liberated per second. [...]
The magnetic field at a point associated with a light wave is B = 2 × 10^−6 Tesla sin[(3.0 × 10^15 s^−1 )t] sin[(6.0 ×10^15 s^−1 )t]. If this light falls on a metal surface having a work function of 2.0eV, what will be the maximum kinetic energy of the photoelectrons ?
29
Nov
The magnetic field at a point associated with a light wave is B = 2 × 10^−6 Tesla sin[(3.0 × 10^15 s^−1 )t] sin[(6.0 ×10^15 s^−1 )t]. If this light falls on a metal surface having a work function of 2.0eV, what will be the maximum kinetic energy of the photoelectrons ? Ultraviolet beam of [...]
In an experiment on photoelectric effect, light of wavelength 800nm ( less than threshold wavelength) is incident on a cesium plate at the rate of 5.0W. The potential of the collector plate is made sufficiently positive with respect to the emitter so that the current reaches its saturation value. Assuming that on the average one of every 10^6 photons is able to eject a photoelectron, find photo current in the circuit.
29
Nov
In an experiment on photoelectric effect, light of wavelength 800nm ( less than threshold wavelength) is incident on a cesium plate at the rate of 5.0W. The potential of the collector plate is made sufficiently positive with respect to the emitter so that the current reaches its saturation value. Assuming that on the average one [...]
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 [...]
Which of the following sets of quantum numbers represents the highest energy of an atom
29
Nov
Which of the following sets of quantum numbers represents the highest energy of an atom Which of the following sets of quantum numbers represents the highest energy of an atom November 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
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 [...]