Chapter 17 – Dual Nature of Radiation
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The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation incident on this surface is 5V. The incident radiation lies in:
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Nov
The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation incident on this surface is 5V. The incident radiation lies in: The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV and the stopping potential for a radiation incident on [...]
Photon of frequency v has a momentum associated with it. If c is the velocity of light, the momentum is :
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Nov
Photon of frequency v has a momentum associated with it. If c is the velocity of light, the momentum is : Photon of frequency v has a momentum associated with it. If c is the velocity of light the momentum is : November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE [...]
The surface of a metal is illuminated with the light of 400nm. The kinetic energy of the ejected photoelectrons was found to be 1.68eV. The work function of the metal is (hc=1240eVnm)
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Nov
The surface of a metal is illuminated with the light of 400nm. The kinetic energy of the ejected photoelectrons was found to be 1.68eV. The work function of the metal is (hc=1240eVnm) The surface of a metal is illuminated with the light of 400nm. The kinetic energy of the ejected photoelectrons was found to be [...]
Match List I with List II and select the correct option from the choices given below the List:
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Nov
Match List I with List II and select the correct option from the choices given below the List: Match List I with List II and select the correct option from the choices given below the List: November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE Mains Physics 2002-2019 Solved Video Solutions [...]
If a source of power 4 kW produces 10^20 photons per second, the radiation belongs to a part of spectrum called
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Nov
If a source of power 4 kW produces 10^20 photons per second, the radiation belongs to a part of spectrum called If a source of power 4 KW produces 10^20 photons per second the radiation belongs to a part of spectrum called November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE [...]
Statement I A metallic surface is irradiated by a monochromatic light of frequency v > v0 (the threshold frequency). The maximum kinetic energy and the stopping potential are Kmax and V0, respectively. If the frequency incident on the surface is doubled, both the Kmax and V0 are also doubled. Statement II The maximum kinetic energy and the stopping potential o photo-electrons emitted from a surface are linearly dependent on the frequency of incident light.
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Nov
Statement I A metallic surface is irradiated by a monochromatic light of frequency v > v0 (the threshold frequency). The maximum kinetic energy and the stopping potential are Kmax and V0, respectively. If the frequency incident on the surface is doubled, both the Kmax and V0 are also doubled. Statement II The maximum kinetic energy [...]
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an electron of energy 5.6 eV passes through mercury vapour and emerges with an energy 0.7 eV. The minimum wavelength of photons emitted by mercury atoms is close to ,
In a Frank-Hertz experiment ,
respectively. If the frequency incident on the surface is doubled ,
Statement I A metallic surface is irradiated by a monochromatic light of frequency v > v0 (the threshold frequency). The maximum kinetic energy and the stopping potential are Kmax and V0 ,
Statement 1 : Davisson-Germer experiment established the wave nature of electrons. Statement 2 : If electrons have wave nature, they can interfere and show diffraction.
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Nov
Statement 1 : Davisson-Germer experiment established the wave nature of electrons. Statement 2 : If electrons have wave nature, they can interfere and show diffraction. Statement 1: Davisson-Germer experiment established the wave nature of electrons. Statement 2: If electrons have wave nature they can interfere and show diffraction. November 29, 2020 Category: Chapter 17 - [...]
The radiation corresponding to 3→2 transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of 3×10^−4T. If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of the metal is close to
29
Nov
The radiation corresponding to 3→2 transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magnetic field of 3×10^−4T. If the radius of the largest circular path followed by these electrons is 10.0 mm, the work function of the metal is close to an electron of [...]
Radiation of wavelength λ, is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to 3λ/4, the speed of the fastest emitted electron will be :
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Nov
Radiation of wavelength λ, is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to 3λ/4, the speed of the fastest emitted electron will be : is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to 3λ/4 Radiation of wavelength [...]
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X−rays. It produces continuous as well as characteristic X−rays. If λmin is the smallest possible wavelength of X−ray in the spectrum, the variation of logλmin with log V is correctly represented in :
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Nov
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X−rays. It produces continuous as well as characteristic X−rays. If λmin is the smallest possible wavelength of X−ray in the spectrum, the variation of logλmin with log V is correctly represented in : In an electron microscope the [...]