Photoelectric EffectHard
Question
Two electrons starting from rest are accelerated by equal potential difference.
Options
A.they will have same kinetic energy
B.they will have same linear momentum
C.they will have same de Broglie wave length
D.they may produce x-rays of same minimum wave length when they strike different targets.
Solution
Kinetic energy of an electron is given by
k =
mv2 = eV = same for both electron
Where V = speed of electron
V = Potential difference
Linear momentum of two electron may be different, in direction but their magnitude i.e. mv =
will be same. De-Broglie wavelength is given by
λ =
= same for both electrons
Minimum wavelength of produced x-rays is given by
λmin =
= same for both electrons.
k =
mv2 = eV = same for both electronWhere V = speed of electron
V = Potential difference
Linear momentum of two electron may be different, in direction but their magnitude i.e. mv =
will be same. De-Broglie wavelength is given byλ =
= same for both electronsMinimum wavelength of produced x-rays is given by
λmin =
= same for both electrons.Create a free account to view solution
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