JEE Mains Physics 2002-2019 Solved Video Solutions
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then :
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Nov
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then : A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. [...]
The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows
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Nov
The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate [...]
The time taken by a photoelectron to come out after the photon strikes is approximately :
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Nov
The time taken by a photoelectron to come out after the photon strikes is approximately : The time taken by a photoelectron to come out after the photon strikes is approximately : November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE Mains Physics 2002-2019 Solved Video Solutions ,
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 - [...]