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The speed of electrons in an electron microscope is 10^8 m/s. If protons with the same speed are used instead of electrons, what additional advantage such a proton microscope has over
10
Sep
The speed of electrons in an electron microscope is 10^8 m/s. If protons with the same speed are used instead of electrons, what additional advantage such a proton microscope has over The speed of electrons in an electron microscope is 10^8 m/s. If protons with the same speed are used instead of electrons what additional [...]
The extent of localization of a particle is determined roughly by its de Broglie wave. If an electron is localized within the nucleus (of size about 10^-14m) of an atom, what is its energy?
10
Sep
The extent of localization of a particle is determined roughly by its de Broglie wave. If an electron is localized within the nucleus (of size about 10^-14m) of an atom, what is its energy? The extent of localization of a particle is determined roughly by its de Broglie wave. If an electron is localized within [...]
Find the ratio of de-broglie wavelength of molecules of hydrogen and helium which are at temperatures 27 C and 127 C respectively.
10
Sep
Find the ratio of de-broglie wavelength of molecules of hydrogen and helium which are at temperatures 27 C and 127 C respectively. Find the ratio of de-broglie wavelength of molecules of hydrogen and helium which are at temperatures 27 C and 127 C respectively. September 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
if the above magnetic field is present perpendicular to a ring of radius of 1 cm, mass = 10 g and charge =1 C, then the angular velocity of the ring as a function of time is
10
Sep
if the above magnetic field is present perpendicular to a ring of radius of 1 cm, mass = 10 g and charge =1 C, then the angular velocity of the ring as a function of time is if the above magnetic field is present perpendicular to a ring of radius of 1 cm mass = [...]
Determine the de-Broglie wavelength of a proton, whose kinetic energy is equal to the rest of the mass energy of an electron. Given that the mass of an electron is 9.1 * 10^-31 kg
10
Sep
Determine the de-Broglie wavelength of a proton, whose kinetic energy is equal to the rest of the mass energy of an electron. Given that the mass of an electron is 9.1 * 10^-31 kg Determine the de-Broglie wavelength of a proton whose kinetic energy is equal to the rest of the mass energy of an [...]
(a) For what kinetic energy of a neutron will the associated de-Broglie wavelength be 1.40 * 10^-10 m? (b) Also, find the de-Broglie wavelength of a neutron, in thermal equilibrium with matter,
10
Sep
(a) For what kinetic energy of a neutron will the associated de-Broglie wavelength be 1.40 * 10^-10 m? (b) Also, find the de-Broglie wavelength of a neutron, in thermal equilibrium with matter, (a) For what kinetic energy of a neutron will the associated de-Broglie wavelength be 1.40 * 10^-10 m? (b) Also find the de-Broglie [...]
It is known to you that ”whenever the flux of a magnetic field through the area bound by a closed conducting loop changes , an emf is produced in the loop . Then emf is given by ε=−dϕdt , where ψ=∫B→.d→s is the flux of the magnetic flux through a closed loop changes, an electric current results. Let us now investigate ” what is the external mechanism that maintains the electric field in the loop to drive the current”. In the words what is the mechanism to produce an emf? (a) keeping ther magnetic field constant as time pases and moving whole as part of the loop. (b) Keeping the loop at rest and changing the magnetic field. (c) Combination of (a) and (b)that is by moving the loop ( partly or wholly) as well as by changing the field. The mechanism (a) for production of emf is studie under the heating motional emf and mechanism (b) under the heating induced electric field. In mechanism (a) , magnitude of the potential difference across the conductor is given by ε=Blv where,B,l, v have their usual meanings and the electrostatic field developed within the conductor E=vB Whereas if the magnetic field through a stationary conduting loop is changing with time, then also there will be an induced emf whose value will be ε=∮E→.d→l, where E is the induced electric field. The electric field produced by the changing magnetic field is non-electrostatic and non-conservation
10
Sep
It is known to you that ”whenever the flux of a magnetic field through the area bound by a closed conducting loop changes , an emf is produced in the loop . Then emf is given by ε=−dϕdt , where ψ=∫B→.d→s is the flux of the magnetic flux through a closed loop changes, an electric [...]
The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which (a) an electron and (b) a neutron would have the same de Broglie
10
Sep
The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which (a) an electron and (b) a neutron would have the same de Broglie The wavelength of light from the spectral emission line of sodium is 589 nm. Find the kinetic energy at which (a) an [...]
By what velocity a ball be projected vertically upward so that the distance covered by it in 5th second is twice the distance it covers in its 6th second
10
Sep
By what velocity a ball be projected vertically upward so that the distance covered by it in 5th second is twice the distance it covers in its 6th second By what velocity a ball be projected vertically upward so that the distance covered by it in 5th second is twice the distance it covers in [...]
Find the typical de-Broglie wavelength of an electron in a metal at 27 C and compare it with the mean separation between two electrons in a metal which is given to be about 2 * 10^-10 m.
10
Sep
Find the typical de-Broglie wavelength of an electron in a metal at 27 C and compare it with the mean separation between two electrons in a metal which is given to be about 2 * 10^-10 m. Find the typical de-Broglie wavelength of an electron in a metal at 27 C and compare it with [...]