Which one of the relation is correct between time period and number of orbits while an electron is revolving in a orbit
${n^2}$
$\frac{1}{{{n^2}}}$
${n^3}$
$\frac{1}{n}$
(c)$T \propto {n^3}$
If the force between the electron in the first Bohr orbit and the nucleus (proton) in hydrogen atom is $F$, then the force between them when the electron is in the second orbit is
The wavelength of the first line of Balmer series of hydrogen atom is $\lambda \,\mathop A\limits^o $. The wavelength of this line of a double ionised lithium atom $(Z = 3)$is
When the accelerating voltage applied on the electrons increased beyond a critical value
In Bohr model of hydrogen atom, the force on the electron depends on the principal quantum number as
According to the nuclear model of an atom, what is the area of the whole mass of the atom located ?
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