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An electron revolves around a nucleus of charge Ze. In order to excite the electron from the state n=2 to n=3, the energy required is 47.2 eVZ is equal to,

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Important Questions on Modern Physics

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JEE Advanced
IMPORTANT
An electron with kinetic energy 5 eV is incident on a H-atom in its ground state. The collision,
MEDIUM
JEE Advanced
IMPORTANT
As per Bohr model, the minimum energy (in eV) required to remove an electron from the ground state of doubly ionised Li atom is,
EASY
JEE Advanced
IMPORTANT
The first excitation potential of hydrogen atom in the ground state is,
HARD
JEE Advanced
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If the wavelength of first member of Balmer series of hydrogen spectrum is 6563 A, the wavelength of second member of Balmer series will be,
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JEE Advanced
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Hydrogen atom emits blue light when it jumps from n=4 level to the n=2 level. Which colour of light would the atom emit when it changes from the n=5 level to n=2 level?
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JEE Advanced
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The second line in the Paschen series is obtained when the electron makes the transition from
HARD
JEE Advanced
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The electron in a hydrogen atom makes the transition from M-shell to L-shell. The ratio of the magnitude of initial to the final acceleration of the electron is
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JEE Advanced
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The orbital angular momentum of an electron in the n1th shell of the element of atomic number Z1 is L1 and the same in the n2th shell of an element of atomic number Z2 is L2. If L2>L1, then