JEE Mains Physics 2002-2019 Solved Video Solutions
The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. The stopping potential in volt is
15
Sep
The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. The stopping potential in volt is The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. The stopping potential in volt [...]
As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of doubly ionized Li atom (Z = 3) is
15
Sep
As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of doubly ionized Li atom (Z = 3) is As per Bohr model the minimum energy ( in eV) required to remove an electron from the ground state of doubly ionized Li atom (Z = 3 ) [...]
A star initially has 10^40 deuterons. It produces energy via the processes 1H^2+1H^2→1H^3+p and 1H^2+1H^3→2He^4+n. If the average power radiated by the star is 10^16 W, the deuteron supply of the star is exhausted in a time of the order of
15
Sep
A star initially has 10^40 deuterons. It produces energy via the processes 1H^2+1H^2→1H^3+p and 1H^2+1H^3→2He^4+n. If the average power radiated by the star is 10^16 W, the deuteron supply of the star is exhausted in a time of the order of A star initially has 10^40 deuterons. It produces energy via the processes 1H^2+1H^2→1H^3+p and [...]
Two identical p-n junctions may be connected in series with a battery in three ways . The potential drops across the two p-n junctions are equal in
15
Sep
Two identical p-n junctions may be connected in series with a battery in three ways . The potential drops across the two p-n junctions are equal in Two identical p-n junctions may be connected in series with a battery in three ways . The potential drops across the two p-n junctions are equal in September [...]
A freshly prepared radioactive source of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with this source is
15
Sep
A freshly prepared radioactive source of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. The minimum time after which it would be possible to work safely with this source is at the end of which 1/20th of the radon sample will remain undecayed is (given log10e=0.4343) The half-life [...]
Beta rays emitted by a radioactive material are.
15
Sep
Beta rays emitted by a radioactive material are. Beta rays emitted by a radioactive material are. September 15, 2021 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 Solved Video Solutions ,
Consider the spectral line resulting from the transition n=2→n=1 in the atoms and ions given below. The shortest wavelength is produced by
15
Sep
Consider the spectral line resulting from the transition n=2→n=1 in the atoms and ions given below. The shortest wavelength is produced by Consider the spectral line resulting from the transition n=2→n=1 in the atoms and ions given below. The shortest wavelength is produced by September 15, 2021 Category: Chapter 18 - Atoms and Nuclei , [...]
The shortest wavelength of X-rays emitted from an X-ray tube depends on
15
Sep
The shortest wavelength of X-rays emitted from an X-ray tube depends on The shortest wavelength of X-rays emitted from an X-ray tube depends on September 15, 2021 Category: Chapter 18 - Atoms and Nuclei , JEE Mains Physics 2002-2019 Solved Video Solutions ,
The half-life of the radioactive radon is 3.8 days. The time, at the end of which 1/20th of the radon sample will remain undecayed, is (given log10e=0.4343)
15
Sep
The half-life of the radioactive radon is 3.8 days. The time, at the end of which 1/20th of the radon sample will remain undecayed, is (given log10e=0.4343) at the end of which 1/20th of the radon sample will remain undecayed is (given log10e=0.4343) The half-life of the radioactive radon is 3.8 days. The time September [...]
At what temperature is the rms velocity of hydrogen molecule equal to that of an oxygen molecule at 47^∘C?
11
Sep
At what temperature is the rms velocity of hydrogen molecule equal to that of an oxygen molecule at 47^∘C? At what temperature is the rms velocity of hydrogen molecule equal to that of an oxygen molecule at 47^∘C? September 11, 2021 Category: Chapter 9 - Kinetic Theory of Gases , JEE Mains Physics 2002-2019 Solved [...]