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Recent questions tagged atomic physics
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Find the nuclear screening constant for the L-series of X-rays if it is known that X-rays with a wavelength of λ = 1.43
asked
Apr 7, 2019
in
Physics
by
kratos
class-12
jee
jee mains
atomic physics
+2
votes
1
answer
A sample initially contains 10^20 radioactive atoms of half-life 130 days. Calculate the activity of the sample after 260 days have elapsed.
asked
Apr 5, 2019
in
Physics
by
kratos
jee
jee mains
atomic physics
+2
votes
1
answer
Which among the following gases absorb long wavelength infared radiation emitted from the earth'* surface ?
asked
Apr 5, 2019
in
Chemistry
by
kratos
structure of atom
class-11
physical chemistry
atomic physics
atomic structure
class-12
bitsat
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1
answer
Light corresponding to the transition n = 4 to n = 2 in hydrogen atoms falls on cesium metal having work function
asked
Apr 3, 2019
in
Physics
by
kratos
modern physics
jee
jee mains
class-12
atomic physics
+2
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1
answer
Solar radiation emitted by sun resembles that emitted by a ***** body at a temperature of 6000 K.
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Apr 2, 2019
in
Physics
by
kratos
irodov
neet
thermal radiation
class-11
jee
thermodynamics
properties of matter
optics
jee mains
bitsat
heat
atomic physics
+2
votes
1
answer
Hydrogen similar any ion emits a radiation of 2.467 × 10^7 Hz frequency in transition from
asked
Apr 1, 2019
in
Physics
by
kratos
class-12
jee
jee mains
atomic physics
+1
vote
1
answer
If a photon frequency v falls on the surface of earth from a height h, then what will be its frequency on the surface of earth.
asked
Mar 30, 2019
in
Physics
by
kratos
jee
jee mains
atomic physics
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vote
1
answer
The radius Bohr’* orbit in ground state for H-atom is (Take ∈0 = 8.86 × 10^–12 C^2 /Nm2 , h = 6.6 × 10^–34 J-*)
asked
Mar 30, 2019
in
Physics
by
kratos
class-12
jee
jee mains
atomic physics
+3
votes
1
answer
A radioactive nuclei with decay constant 0.5/* is being produced at a constant rate of 100 nuclei/*.
asked
Mar 29, 2019
in
Physics
by
kratos
ordinary differential equations
neet
jee advanced 2019
aiims
jee
atomic physics
jee mains
class-12
nuclei
+2
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0
answers
What do you mean by stable orbit of the electron? What is the condition for it?
asked
Mar 27, 2019
in
Physics
by
kratos
class-12
atomic physics
+3
votes
1
answer
The Bohr orbit radius for the hydrogen atom (n = 1) is approximately 0.53 . The radius for the first excited state (n = 2) orbit (in ) is :
asked
Mar 26, 2019
in
Physics
by
kratos
neet
atomic and nuclear physics
class-11
jee
atomic physics
jee mains
class-12
structure of atom
+2
votes
1
answer
What is the dI-Brogie wavelength associated with an electron, accelearated through a potential difference of 100 volt.
asked
Mar 21, 2019
in
Physics
by
kratos
cbse
jee main 2021
jee
jee main
jee mains
class-12
atomic physics
+3
votes
1
answer
The angular momentum of an electron in a Bohr'* orbti or He^+ is 3.1652 x 10^–34 kg-m^2/*.
asked
Mar 21, 2019
in
Physics
by
kratos
isc
class-11
jee
atomic structure
icse
jee mains
class-12
atomic physics
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vote
1
answer
Calculate radius of second Bohr radius of hydrogen atom and then also calculate the speed of the electron and total
asked
Mar 19, 2019
in
Physics
by
kratos
class-12
atomic physics
+2
votes
1
answer
When photons of energy 4.25 eV strike the surface of a metal A the ejected photo electrons have a maximum kinetic energy EA eV
asked
Mar 16, 2019
in
Physics
by
kratos
dual nature of radiation
neet
jee
aiims
dual nature of radiation and matter
jee mains
nuclear physics
atomic physics
+2
votes
1
answer
In the n^th class of hydrogen atom (angular momentum L), the magnetic moment due to orbital motion of electron is :
asked
Mar 16, 2019
in
Physics
by
kratos
class-12
atomic physics
+2
votes
1
answer
Photons emitted when electrons in a H-atom make transition from a higher energy state to lower energy state,
asked
Mar 6, 2019
in
Chemistry
by
kratos
bsnl
neet
class-11
physical chemistry
atomic structure
class-12
atomic physics
+2
votes
1
answer
Give postulates of Bohr'* theory. Explain hydrogen spectrum on the basis of Bohr'* theory.
asked
Mar 6, 2019
in
Physics
by
kratos
class-11
class-12
atoms
atomic physics
+1
vote
1
answer
When violet light of λ = 4000 Au strikes the cathode of a photocell a retarding potential of 0.4 V is required to stop emission of electrons.Calculate
asked
Mar 1, 2019
in
Physics
by
kratos
neet
aiims
jee
jee mains
atomic physics
+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
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