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If a source of power 4 kW produces 10^20 photons per second, the radiation belongs to a part of spectrum called
29
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.
29
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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Chapter 17 - Dual Nature of Radiation
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JEE Mains Physics 2002-2019 Solved Video Solutions
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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.
29
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 [...]
Among B2H6, B3N3H6, N2O, N2O4, H2S2O3 and H2S2O8, the total number of molecules containing covalent bond between two atoms of the same kind is …………………
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Nov
Among B2H6, B3N3H6, N2O, N2O4, H2S2O3 and H2S2O8, the total number of molecules containing covalent bond between two atoms of the same kind is ………………… Among B2H6 B3N3H6 H2S2O3 and H2S2O8 N2O N2O4 the total number of molecules containing covalent bond between two atoms of the same kind is ..................... November 29, 2020 Category: Uncategorised [...]
The total number of compounds having at least one bridging oxo group among the molecules given below is ………………………. N2O3, N2O5, P4O6, P4O7, H4P2O5, H5P3O10, H2S2O3, H2S2O5
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Nov
The total number of compounds having at least one bridging oxo group among the molecules given below is ………………………. N2O3, N2O5, P4O6, P4O7, H4P2O5, H5P3O10, H2S2O3, H2S2O5 H2S2O3 H2S2O5 H4P2O5 H5P3O10 N2O5 P4O6 P4O7 The total number of compounds having at least one bridging oxo group among the molecules given below is ............................ N2O3 November [...]
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 [...]
How many of the following s-block elements do not give characteristic colours in the flame test Li, Be, Ca, Sr, Mg, Na, K, Ba
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Nov
How many of the following s-block elements do not give characteristic colours in the flame test Li, Be, Ca, Sr, Mg, Na, K, Ba Ba Be Ca How many of the following s-block elements do not give characteristic colours in the flame test Li K Mg Na Sr November 29, 2020 Category: Uncategorised (JEE Advanced [...]
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 :
29
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 [...]
An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λn,λg be the de Broglie wavelength of the electron in the nth state and the ground state respectively. Let ⋀n be the wavelength of the emitted photon in the transition from the nth state to the ground state. For large n, (A, B are constants)
29
Nov
An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λn,λg be the de Broglie wavelength of the electron in the nth state and the ground state respectively. Let ⋀n be the wavelength of the emitted photon in the transition from the nth state to the ground [...]
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Chapter 17 - Dual Nature of Radiation
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JEE Mains Physics 2002-2019 Solved Video Solutions
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An electron from various excited states of hydrogen atom emit radiation to come to the ground state. Let λn ,
In an electron microscope ,
the minimum electron energy required is close to ,
the resolution that can be achieved is of the order of the wavelength of electrons used. To resolve a width of 7.5×10^−12m ,