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Recent questions tagged atoms
Questions
Explain the origin of spectral lines of hydrogen spectrum on basis of Bohr's theory.
cbse
class 12
physics
atoms
asked
Jul 20, 2017
by
pady_1
2
answers
Obtain the relation for frequency of spectral lines emitted from hydrogen atoms.
cbse
class 12
physics
atoms
asked
Jul 20, 2017
by
pady_1
1
answer
Calculate the energy level of an electron in $n^{th}$ orbit or derive an equation for the energy of
cbse
class 12
physics
atoms
asked
Jul 20, 2017
by
pady_1
1
answer
Sun gives light at rate of $\;1400 Wm^{-2}\;$ of area perpendicular to direction of light . Assume $\;\lambda\;$ (sun light )= $\;6000 A^{0}\;.$ Then no.of Photons emitted from sun/sec assuming average radius of earth's orbit is $\;1.49\times10^{11} m\;$ is
jeemain
physics
class12
atoms
easy
asked
Feb 21, 2014
by
yamini.v
1
answer
Sun gives light at rate of $\;1400 Wm^{-2}\;$ of area perpendicular to direction of light . Assume $\;\lambda\;$ (sun light )= $\;6000 A^{0}\;.$ Then no.of Photons/sec arriving at $\;1m^2\;$ area at that part of earth is
jeemain
physics
class12
atoms
easy
asked
Feb 21, 2014
by
yamini.v
1
answer
The intensity of direct sunlight before it passes through the earth's atmosphere is $\;1.4 KW/m^2\;.$ If it is completely obsorved than the corresponding radiation pressure :
jeemain
physics
class12
atoms
easy
asked
Feb 21, 2014
by
yamini.v
1
answer
De Broglie wavelength of photoelectrons is $1\: A^{\circ}$ . What is stopping potential?
jeemain
physics
atoms
cbse
class12
dual-nature-matter-radiation
wave-nature-of-matter
medium
asked
Dec 27, 2013
by
thanvigandhi_1
1
answer
Find the de Broglie $ \lambda$ of a neutron, in thermal equilibrium with matter, having an average $KE\: of \bigg(\large\frac{3}{2} \bigg)\: kT$ at $300 \: K.$
jeemain
physics
atoms
cbse
class12
dual-nature-matter-radiation
wave-nature-of-matter
medium
asked
Dec 27, 2013
by
thanvigandhi_1
1
answer
The typical de Broglie wavelength associated with a $He$ atom in $He$ gas at room temperature $(27^{\circ}C)$ and $1 \: atm$ pressure is $ \lambda$, and the mean separation between two atoms under these conditions is $r.$
jeemain
physics
atoms
cbse
class12
dual-nature-matter-radiation
wave-nature-of-matter
medium
asked
Dec 27, 2013
by
thanvigandhi_1
1
answer
What is the de Broglie wavelength of a nitrogen molecule in air at $300\; K?$ Assume molecule is moving with the rms speed of molecules at this temp. At. mass of $N= 14.0076 \; u$
jeemain
physics
atoms
cbse
class12
dual-nature-matter-radiation
wave-nature-of-matter
medium
asked
Dec 25, 2013
by
thanvigandhi_1
1
answer
The $ \lambda$ of light from the spectral emission line of sodium is $589\: nm$. Find the $KE$ at which an electron would have the same de Broglie wavelength.
jeemain
physics
atoms
cbse
class12
dual-nature-matter-radiation
wave-nature-of-matter
medium
asked
Dec 25, 2013
by
thanvigandhi_1
1
answer
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