Part 2
When electron jumps from n=4 level to n=1 level, the angular momentum of electron changes by
07
Jun
When electron jumps from n=4 level to n=1 level, the angular momentum of electron changes by the angular momentum of electron changes by When electron jumps from n=4 level to n=1 level June 7, 2021 Category: Chapter 12 - Atoms , MTG NEET Physics , Part 2 ,
The energy required to excite an electron from n=2 to n=4 state in hydrogen atom
07
Jun
The energy required to excite an electron from n=2 to n=4 state in hydrogen atom The energy required to excite an electron from n=2 to n=4 state in hydrogen atom June 7, 2021 Category: Chapter 12 - Atoms , MTG NEET Physics , Part 2 ,
An electron revolves round a nucleus of charge Ze.40.8 eV of energy is needed to excite an electron from n=1 to n=2 state. Find the value of Z
07
Jun
An electron revolves round a nucleus of charge Ze.40.8 eV of energy is needed to excite an electron from n=1 to n=2 state. Find the value of Z An electron revolves round a nucleus of charge Ze.40.8 eV of energy is needed to excite an electron from n=1 to n=2 state. Find the value of [...]
An α-particle of energy 6 MeV is scattered through 180∘ by gold nucleus. The distance of the closest approach is of the order of
07
Jun
An α-particle of energy 6 MeV is scattered through 180∘ by gold nucleus. The distance of the closest approach is of the order of An α-particle of energy 6 MeV is scattered through 180∘ by gold nucleus. The distance of the closest approach is of the order of June 7, 2021 Category: Chapter 12 - [...]
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 [...]
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 [...]