Part 2
When a certain metal surface is illuminated with light of frequency v, the stopping potential for photoelectric current is V0. When the same surface is illuminated by light of frequency v/2, the stopping potential is V0/4. The threshold frequency for photoelectric emission is
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Nov
When a certain metal surface is illuminated with light of frequency v, the stopping potential for photoelectric current is V0. When the same surface is illuminated by light of frequency v/2, the stopping potential is V0/4. The threshold frequency for photoelectric emission is the stopping potential for photoelectric current is V0. When the same surface [...]
One milliwatt of light of wavelength 4560 A is incident on a cesium surface of work function 1.9 ev. Given that quantum efficiency of photoelectric emission is 0.5 %. Planck’s constant h = 6.62 × 10^-34 J-s and velocity of light c = 3 × 10^8 ms^-1.
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Nov
One milliwatt of light of wavelength 4560 A is incident on a cesium surface of work function 1.9 ev. Given that quantum efficiency of photoelectric emission is 0.5 %. Planck’s constant h = 6.62 × 10^-34 J-s and velocity of light c = 3 × 10^8 ms^-1. Ultraviolet beam of wavelength 280 nm is incident [...]
In a photoelectric experiment, the graph of frequency υ of incident light (in Hz) and stopping potential V (in V) is as shown in the figure. From figure, the value of the Planck’s constant is (e is the elementary charge)
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Nov
In a photoelectric experiment, the graph of frequency υ of incident light (in Hz) and stopping potential V (in V) is as shown in the figure. From figure, the value of the Planck’s constant is (e is the elementary charge) In a photoelectric experiment the graph of frequency υ of incident light (in Hz) and [...]
A metallic surface is irradiated by a monochromatic light of frequency υ1 and stopping potential is found to be V1 If the light of frequency υ2 irradiates the surface, the stopping potential will be
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Nov
A metallic surface is irradiated by a monochromatic light of frequency υ1 and stopping potential is found to be V1 If the light of frequency υ2 irradiates the surface, the stopping potential will be A metallic surface is irradiated by a monochromatic light of frequency υ1 and stopping potential is found to be V1 If [...]
Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from metal surface is
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Nov
Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from metal surface is Ultraviolet beam of wavelength 280 nm is incident on lithium surface of work function 2.5 eV. The maximum velocity of electron emitted from metal surface is November 29, 2020 [...]
If E1,E2, and E3 respective the kinetic energies of an electron and an alpha particle and a proton each having same de-Broglie wavelength then
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Nov
If E1,E2, and E3 respective the kinetic energies of an electron and an alpha particle and a proton each having same de-Broglie wavelength then and E3 respective the kinetic energies of an electron and an alpha particle and a proton each having same de-Broglie wavelength then E2 If E1 November 29, 2020 Category: Chapter 11 [...]
For light beam of wavelength 632.8 nm. What is the momentum of each photon in the beam ?
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Nov
For light beam of wavelength 632.8 nm. What is the momentum of each photon in the beam ? For light beam of wavelength 632.8 nm. What is the momentum of each photon in the beam ? November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter , MTG NEET Physics , Part [...]
The de Broglie wavelength of an electron with kinetic energy 120 eV is (Given h=6.63×10^−34 Js, me = 9×11^−31 kg,1e=1.6×10^−19 C):
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Nov
The de Broglie wavelength of an electron with kinetic energy 120 eV is (Given h=6.63×10^−34 Js, me = 9×11^−31 kg,1e=1.6×10^−19 C): 1e=1.6×10^−19 C): me = 9×11^−31 kg The de Broglie wavelength of an electron with kinetic energy 120 eV is (Given h=6.63×10^−34 Js November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and [...]
The de-Broglie wavelength and kinetic energy of a particle is 2000Å and 1eV respectively. If its kinetic energy becomes 1MeV, then its de Broglie wavelength becomes
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Nov
The de-Broglie wavelength and kinetic energy of a particle is 2000Å and 1eV respectively. If its kinetic energy becomes 1MeV, then its de Broglie wavelength becomes The de-Broglie wavelength and kinetic energy of a particle is 2000Å and 1eV respectively. If its kinetic energy becomes 1MeV then its de Broglie wavelength becomes November 29, 2020 [...]
The energy that should be added to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is
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Nov
The energy that should be added to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is The energy that should be added to an electron to reduce its de-Broglie wavelength from 1 nm to 0.5 nm is November 29, 2020 Category: Chapter 11 - Dual Nature of Radiation and Matter [...]