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X-rays emitted from a copper target and a molybdenum target are found to contain a line of wavelength 22,85 nm attributed to the K alpha line of an impurity element. The K alpha lines
16
Oct
X-rays emitted from a copper target and a molybdenum target are found to contain a line of wavelength 22,85 nm attributed to the K alpha line of an impurity element. The K alpha lines 85 nm attributed to the K alpha line of an impurity element. The K alpha lines X-rays emitted from a copper [...]
The circumference of the second Bohr orbit of electron in hydrogen atom is 600 nm. The potential difference that must be applied between the plates so that the electrons have the de Broglie
16
Oct
The circumference of the second Bohr orbit of electron in hydrogen atom is 600 nm. The potential difference that must be applied between the plates so that the electrons have the de Broglie The circumference of the second Bohr orbit of electron in hydrogen atom is 600 nm. The potential difference that must be applied [...]
A conducting current-carrying plane is placed in an external uniform magnetic field. As a result, the magnetic induction becomes equal to B1 on one side of the plane and B2 on the other side. Find the magnetic force acting per unit area of the plane.
16
Oct
A conducting current-carrying plane is placed in an external uniform magnetic field. As a result, the magnetic induction becomes equal to B1 on one side of the plane and B2 on the other side. Find the magnetic force acting per unit area of the plane. A conducting current-carrying plane is placed in an external uniform [...]
A long straight solid conductor of radius 5 cm carries a current of 3 A, which is uniformly distributed over its circular cross-section. Find the magnetic field induction at a distance 4cm from the axis of the conductor. Relative permeability of the conductor = 1000.
16
Oct
A long straight solid conductor of radius 5 cm carries a current of 3 A, which is uniformly distributed over its circular cross-section. Find the magnetic field induction at a distance 4cm from the axis of the conductor. Relative permeability of the conductor = 1000. A long straight solid conductor of radius 5 cm carries [...]
An electron is in an excited state in a hydrogen like atom. It has a total energy of -3.4 eV. The kinetic energy of electron is E and its de Broglie wavelength is lemda
16
Oct
An electron is in an excited state in a hydrogen like atom. It has a total energy of -3.4 eV. The kinetic energy of electron is E and its de Broglie wavelength is lemda An electron is in an excited state in a hydrogen like atom. It has a total energy of -3.4 eV. The [...]
In X-ray tube, when the accelerating voltage V is halved, the difference between the wavelength of K alpha line and minimum wavelength of continuous X-ray spectrum
16
Oct
In X-ray tube, when the accelerating voltage V is halved, the difference between the wavelength of K alpha line and minimum wavelength of continuous X-ray spectrum In X-ray tube the difference between the wavelength of K alpha line and minimum wavelength of continuous X -ray spectrum when the accelerating voltage V is halved October 16, [...]
Find the current density as a funciton of distance r from the axis of a radially symmetrical parallel stream of electrons if the magentic induction inside the strems varies as B = br^2, where b and alpha` are positive contans.
16
Oct
Find the current density as a funciton of distance r from the axis of a radially symmetrical parallel stream of electrons if the magentic induction inside the strems varies as B = br^2, where b and alpha` are positive contans. Find the current density as a funciton of distance r from the axis of a [...]
According to Bohr’s theory of hydrogen atom, the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit
16
Oct
According to Bohr’s theory of hydrogen atom, the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit According to Bohr's theory of hydrogen atom the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit October [...]
The length of a solenoid is 0.1m and its diameter is very small . A wire is wound over in two layers. The number of turns in the inner layer is 50 and that on the outer layer is 40. The strength of current flowing in two layers in the same direction is 3 ampere. The magnetic induction in the middle of the solenoid will be
16
Oct
The length of a solenoid is 0.1m and its diameter is very small . A wire is wound over in two layers. The number of turns in the inner layer is 50 and that on the outer layer is 40. The strength of current flowing in two layers in the same direction is 3 ampere. [...]
In hydrogen and hydrogen-like atoms, the ratio of E 4n – E 2n and E 2n – En varies with atomic number Z and principal quantum number n as
16
Oct
In hydrogen and hydrogen-like atoms, the ratio of E 4n – E 2n and E 2n – En varies with atomic number Z and principal quantum number n as In hydrogen and hydrogen-like atoms the ratio of E 4n - E 2n and E 2n - En varies with atomic number Z and principal quantum [...]