238690 The velocities of two particles $A$ and $B$ are 0.05 and $0.02 \mathrm{~ms}^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their deBroglie's wavelength is :

238691 Two particles of masses $m$ \& $2 m$ have equal kinetic energies. The de-Broglie wavelength are in the ratio of

238694 The energy required to overcome the attractive forces on the electrons, $w$, of some metals is listed below. The number of metals showing photoelectric effect when light of $300 \mathrm{~nm}$ wavelength falls on it is $\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)$
Metal Li Na $\mathrm{K}$ Mg Cu Ag $\mathrm{Fe}$ Pt W

238695 If, the binding energy of electrons in a metal is $250 \mathrm{~kJ} / \mathrm{mol}$, what should be the threshold frequency of the striking photons in order to free an electron from the metal surface?

238690 The velocities of two particles $A$ and $B$ are 0.05 and $0.02 \mathrm{~ms}^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their deBroglie's wavelength is :

238691 Two particles of masses $m$ \& $2 m$ have equal kinetic energies. The de-Broglie wavelength are in the ratio of

238694 The energy required to overcome the attractive forces on the electrons, $w$, of some metals is listed below. The number of metals showing photoelectric effect when light of $300 \mathrm{~nm}$ wavelength falls on it is $\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)$
Metal Li Na $\mathrm{K}$ Mg Cu Ag $\mathrm{Fe}$ Pt W

238695 If, the binding energy of electrons in a metal is $250 \mathrm{~kJ} / \mathrm{mol}$, what should be the threshold frequency of the striking photons in order to free an electron from the metal surface?

238690 The velocities of two particles $A$ and $B$ are 0.05 and $0.02 \mathrm{~ms}^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their deBroglie's wavelength is :

238691 Two particles of masses $m$ \& $2 m$ have equal kinetic energies. The de-Broglie wavelength are in the ratio of

238694 The energy required to overcome the attractive forces on the electrons, $w$, of some metals is listed below. The number of metals showing photoelectric effect when light of $300 \mathrm{~nm}$ wavelength falls on it is $\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)$
Metal Li Na $\mathrm{K}$ Mg Cu Ag $\mathrm{Fe}$ Pt W

238695 If, the binding energy of electrons in a metal is $250 \mathrm{~kJ} / \mathrm{mol}$, what should be the threshold frequency of the striking photons in order to free an electron from the metal surface?

238690 The velocities of two particles $A$ and $B$ are 0.05 and $0.02 \mathrm{~ms}^{-1}$ respectively. The mass of $B$ is five times the mass of $A$. The ratio of their deBroglie's wavelength is :

238691 Two particles of masses $m$ \& $2 m$ have equal kinetic energies. The de-Broglie wavelength are in the ratio of

238694 The energy required to overcome the attractive forces on the electrons, $w$, of some metals is listed below. The number of metals showing photoelectric effect when light of $300 \mathrm{~nm}$ wavelength falls on it is $\left(1 \mathrm{eV}=1.6 \times 10^{-19} \mathrm{~J}\right)$
Metal Li Na $\mathrm{K}$ Mg Cu Ag $\mathrm{Fe}$ Pt W

238695 If, the binding energy of electrons in a metal is $250 \mathrm{~kJ} / \mathrm{mol}$, what should be the threshold frequency of the striking photons in order to free an electron from the metal surface?