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Recent questions tagged physics of atom
+2
votes
1
answer
Find the maximum Coulomb force that can act on the electron due to the nucleus in a hydrogen atom.
asked
Mar 24, 2019
in
Physics
by
kratos
physics of atom
class-12
+2
votes
1
answer
Find the maximum angular speed of the electron of a hydrogen atom in a stationary orbit.
asked
Mar 22, 2019
in
Physics
by
kratos
class-12
physics of atom
+1
vote
1
answer
The light emitted in the transition n = 3 to n = 2 in hydrogen is called Hα light. Find the maximum work function
asked
Mar 22, 2019
in
Physics
by
kratos
physics of atom
class-12
+3
votes
1
answer
An electron *** sends electrons through a region with an electric field of 1.5 × 10^4 N/C for a distance of 2.5 cm.
asked
Mar 18, 2019
in
Physics
by
kratos
magnetism
electrostatics
physics of atom
jee
magnetic effect of current
jee mains
class-12
electric current in conductors
+2
votes
1
answer
Average lifetime of a hydrogen atom excited to n=2 state is 10^-8 *. Find the number of revolutions made by the electron on the average
asked
Mar 15, 2019
in
Physics
by
kratos
physics of atom
class-12
+1
vote
1
answer
A soap (water!) film has refractive index 1.34 and is 550 nm thick. What wavelengths of visible light (in nm) are not reflected from it
asked
Mar 14, 2019
in
Physics
by
kratos
class-11
jee
physics of atom
jee mains
light waves
class-12
interference
wave optics
+3
votes
1
answer
The Hα line of hydrogen (a) has a wavelength smaller than that of the Hβ line
asked
Mar 10, 2019
in
Physics
by
kratos
modern physics
cbse
physics of atom
jee
jee mains
class-12
atoms
nuclei
+1
vote
1
answer
(a) Using Bohr’* second postulate of quantization of orbital angular momentum show
asked
Feb 28, 2019
in
Physics
by
kratos
isc
cbse
physics of atom
icse
class-12
atoms
atomic physics
+2
votes
1
answer
The Bohr radius is given by a0 = ∈0h^2/πme^2 Verify that the RHS has dimensions of length.
asked
Feb 21, 2019
in
Physics
by
kratos
physics of atom
class-12
+3
votes
1
answer
The minimum energy required to eject an electron, from the metal surface is called
asked
Feb 20, 2019
in
Physics
by
kratos
modern physics
physics of atom
jee
dual nature of radiation and matter
material technology
icse
class-10
jee mains
class-12
nuclear physics
+3
votes
1
answer
When a photon is emitted from an atom, the atom recoils. The kinetic energy of recoil and the energy of the photon come
asked
Feb 12, 2019
in
Physics
by
kratos
physics of atom
class-12
+2
votes
1
answer
A photon of wavelength 3310 falling on a photo cathode ejects an electron of energy 3 × 10^–19 J and one of wavelength
asked
Feb 7, 2019
in
Physics
by
kratos
physics of atom
jee
dual nature of radiation and matter
jee mains
class-12
atomic physics
+3
votes
1
answer
A neutron moving with a speed v strikes a hydrogen atom in ground state moving towards it with the same speed.
asked
Feb 6, 2019
in
Physics
by
kratos
physics of atom
class-12
+3
votes
1
answer
(a) By using the deBroglie relation, derive the Bohr condition mvr = nℏ for the angular momentum of an electron in a hydrogen atom.
asked
Jan 15, 2019
in
Physics
by
kratos
physics of atom
jee
jee mains
class-12
quantum mechanics
+1
vote
1
answer
A positive ion having just one electron ejects it if a photon of wavelength 228 or less is absorbed by it. Identify the ion.
asked
Jan 13, 2019
in
Physics
by
kratos
class-12
physics of atom
+3
votes
1
answer
A beam of light having wavelengths distributed uniformly between 450 nm to 550 nm passes through a sample of hydrogen gas.
asked
Jan 9, 2019
in
Physics
by
kratos
physics of atom
class-12
+1
vote
1
answer
When a photon is emitted by a hydrogen atom, the photon carries a momentum with it. (a) Calculate the momentum
asked
Jan 8, 2019
in
Physics
by
kratos
physics of atom
class-12
+2
votes
1
answer
Find the temperature at which the average thermal kinetic energy is equal to the energy needed to take a hydrogen atom
asked
Jan 7, 2019
in
Physics
by
kratos
class-12
physics of atom
+1
vote
1
answer
When the hydrogen gas is taken inside discharge tube the deflection will be maximum give season.
asked
Jan 3, 2019
in
Physics
by
kratos
modern physics
electric current through gases
class-11
physics of atom
jee
class-9
jee mains
class-12
structure of atom
+3
votes
1
answer
A beam of ultraviolet light of all wavelengths passes through hydrogen gas at room temperature, in the x-direction.
asked
Dec 27, 2018
in
Physics
by
kratos
modern physics
physics of atom
jee
jee mains
class-12
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