142357 The minimum wavelength of $X$-ray emitted from an $X$-ray tube is $4.125 \times 10^{-2} \mathrm{~nm}$, then voltage applied to the $X$-ray tube is

142360 The shortest wavelength in Lyman series is $912 \AA$. Then, the longest wavelength in the series must be

142363 A particle of mass $1 \mathrm{mg}$ has the same wavelength as an electron moving with a velocity of $3 \times 10^{6}$ $\mathrm{ms}^{-1}$. The velocity of the particle is
$\left(\right.$ Mass of electron $\left.=9.1 \times 10^{-31} \mathbf{~ k g}\right)$

142364 The de-Broglie wavelength of an electron of kinetic energy $9 \mathrm{eV}$ is (take, $\mathrm{h}=4 \times 10^{-15} \mathrm{eV}-\mathrm{s}$, c $=3 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and the mass $m_{1}$ of electron as $\mathrm{m}_{\mathrm{e}} \mathrm{c}^{2}=0.5 \mathrm{MeV}$ )

142365 The frequency of $K_{a}$ line of a source of atomic number $z$ is proportional to

142357 The minimum wavelength of $X$-ray emitted from an $X$-ray tube is $4.125 \times 10^{-2} \mathrm{~nm}$, then voltage applied to the $X$-ray tube is

142360 The shortest wavelength in Lyman series is $912 \AA$. Then, the longest wavelength in the series must be

142363 A particle of mass $1 \mathrm{mg}$ has the same wavelength as an electron moving with a velocity of $3 \times 10^{6}$ $\mathrm{ms}^{-1}$. The velocity of the particle is
$\left(\right.$ Mass of electron $\left.=9.1 \times 10^{-31} \mathbf{~ k g}\right)$

142364 The de-Broglie wavelength of an electron of kinetic energy $9 \mathrm{eV}$ is (take, $\mathrm{h}=4 \times 10^{-15} \mathrm{eV}-\mathrm{s}$, c $=3 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and the mass $m_{1}$ of electron as $\mathrm{m}_{\mathrm{e}} \mathrm{c}^{2}=0.5 \mathrm{MeV}$ )

142365 The frequency of $K_{a}$ line of a source of atomic number $z$ is proportional to

142357 The minimum wavelength of $X$-ray emitted from an $X$-ray tube is $4.125 \times 10^{-2} \mathrm{~nm}$, then voltage applied to the $X$-ray tube is

142360 The shortest wavelength in Lyman series is $912 \AA$. Then, the longest wavelength in the series must be

142363 A particle of mass $1 \mathrm{mg}$ has the same wavelength as an electron moving with a velocity of $3 \times 10^{6}$ $\mathrm{ms}^{-1}$. The velocity of the particle is
$\left(\right.$ Mass of electron $\left.=9.1 \times 10^{-31} \mathbf{~ k g}\right)$

142364 The de-Broglie wavelength of an electron of kinetic energy $9 \mathrm{eV}$ is (take, $\mathrm{h}=4 \times 10^{-15} \mathrm{eV}-\mathrm{s}$, c $=3 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and the mass $m_{1}$ of electron as $\mathrm{m}_{\mathrm{e}} \mathrm{c}^{2}=0.5 \mathrm{MeV}$ )

142365 The frequency of $K_{a}$ line of a source of atomic number $z$ is proportional to

142357 The minimum wavelength of $X$-ray emitted from an $X$-ray tube is $4.125 \times 10^{-2} \mathrm{~nm}$, then voltage applied to the $X$-ray tube is

142360 The shortest wavelength in Lyman series is $912 \AA$. Then, the longest wavelength in the series must be

142363 A particle of mass $1 \mathrm{mg}$ has the same wavelength as an electron moving with a velocity of $3 \times 10^{6}$ $\mathrm{ms}^{-1}$. The velocity of the particle is
$\left(\right.$ Mass of electron $\left.=9.1 \times 10^{-31} \mathbf{~ k g}\right)$

142364 The de-Broglie wavelength of an electron of kinetic energy $9 \mathrm{eV}$ is (take, $\mathrm{h}=4 \times 10^{-15} \mathrm{eV}-\mathrm{s}$, c $=3 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and the mass $m_{1}$ of electron as $\mathrm{m}_{\mathrm{e}} \mathrm{c}^{2}=0.5 \mathrm{MeV}$ )

142365 The frequency of $K_{a}$ line of a source of atomic number $z$ is proportional to

142357 The minimum wavelength of $X$-ray emitted from an $X$-ray tube is $4.125 \times 10^{-2} \mathrm{~nm}$, then voltage applied to the $X$-ray tube is

142360 The shortest wavelength in Lyman series is $912 \AA$. Then, the longest wavelength in the series must be

142363 A particle of mass $1 \mathrm{mg}$ has the same wavelength as an electron moving with a velocity of $3 \times 10^{6}$ $\mathrm{ms}^{-1}$. The velocity of the particle is
$\left(\right.$ Mass of electron $\left.=9.1 \times 10^{-31} \mathbf{~ k g}\right)$

142364 The de-Broglie wavelength of an electron of kinetic energy $9 \mathrm{eV}$ is (take, $\mathrm{h}=4 \times 10^{-15} \mathrm{eV}-\mathrm{s}$, c $=3 \times 10^{10} \mathrm{~cm} / \mathrm{s}$ and the mass $m_{1}$ of electron as $\mathrm{m}_{\mathrm{e}} \mathrm{c}^{2}=0.5 \mathrm{MeV}$ )

142365 The frequency of $K_{a}$ line of a source of atomic number $z$ is proportional to