JEE Mains Physics 2002-2019 Solved Video Solutions
Energy required for the electron excitation in Li^2+ from the first to the third Bohr orbit is
28
Nov
Energy required for the electron excitation in Li^2+ from the first to the third Bohr orbit is Energy required for the electron excitation in Li^2+ from the first to the third Bohr orbit is November 28, 2020 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 Solved Video Solutions ,
After absorbing a slowly moving neutrons of mass mN (momentum ~0) a nucleus of mass M breaks into two nuclei of mass m1 and 5m1(6m1=M + mN), respectively . If the de-Broglie wavelength of the nucleus with mass m1 is λ, then de Broglie wavelength of the other nucleus will be
28
Nov
After absorbing a slowly moving neutrons of mass mN (momentum ~0) a nucleus of mass M breaks into two nuclei of mass m1 and 5m1(6m1=M + mN), respectively . If the de-Broglie wavelength of the nucleus with mass m1 is λ, then de Broglie wavelength of the other nucleus will be After absorbing a slowly [...]
Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be.
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Nov
Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be. Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission [...]
Hydrogen (1H^1), deuterium (1H^2) singly ionised helium (2He^4)+ and doubly ionised lithium (3Li^8)++ all have one electron around the nucleus. Consider an electron transition from n = 2 to n=1. If the wavelengths of emitted radiation are λ1,λ2,λ3 and λ4, respectively for four elements, then approximately which one of the following is correct?
28
Nov
Hydrogen (1H^1), deuterium (1H^2) singly ionised helium (2He^4)+ and doubly ionised lithium (3Li^8)++ all have one electron around the nucleus. Consider an electron transition from n = 2 to n=1. If the wavelengths of emitted radiation are λ1,λ2,λ3 and λ4, respectively for four elements, then approximately which one of the following is correct? Hydrogen (1H1) [...]
As an electron makes a transition from an excited state to the ground state of a hydrogen- like atom/ion
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Nov
As an electron makes a transition from an excited state to the ground state of a hydrogen- like atom/ion As an electron makes a transition from an excited state to the ground state of a hydrogen- like atom/ion November 28, 2020 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 Solved Video [...]
Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is
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Nov
Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is Radiation com in g from transitions n = 2 to n = 1 of [...]
A radioactive nucleus A with a half-life T, decays into a nucleus B. At t=0, there is no nucleus B. After sometime t, the ratio of the number of B to that of A is 0.3. Then, t is given by :
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Nov
A radioactive nucleus A with a half-life T, decays into a nucleus B. At t=0, there is no nucleus B. After sometime t, the ratio of the number of B to that of A is 0.3. Then, t is given by : A radioactive nucleus A with a half-life T decays into a nucleus B. [...]
Some energy levels of a molecule are shown in the fig. The ratio of the wavelengths r=λ1/λ2, is given by
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Nov
Some energy levels of a molecule are shown in the fig. The ratio of the wavelengths r=λ1/λ2, is given by is given by Some energy levels of a molecule are shown in the fig. The ratio of the wavelengths r=λ1/λ2 November 28, 2020 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 [...]
It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is pd ; while for its similar collision with carbon nucleus at rest, fractional loss of energy is pc. The value of pd and pc are respectively :
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Nov
It is found that if a neutron suffers an elastic collinear collision with deuterium at rest, fractional loss of its energy is pd ; while for its similar collision with carbon nucleus at rest, fractional loss of energy is pc. The value of pd and pc are respectively : fractional loss of energy is pc. [...]
If the series limit frequency of the Lyman series is νL, then the series limit frequency of the Pfund series is :
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Nov
If the series limit frequency of the Lyman series is νL, then the series limit frequency of the Pfund series is : If the series limit frequency of the Lyman series is νL then the series limit frequency of the Pfund series is : November 28, 2020 Category: Chapter 18 - Atoms and Nuclei , [...]