Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 13

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Time period of revolution of an electron in $n^{th}$ orbit in a hydrogen like atom is given by $T = \frac{T_{0} n^{a}}{Z^{b}} . Z$ $=$ atomic number

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Important Questions on Atoms

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 14

If in Bohr's atomic model, it is assumed that force between electron and proton varies inversely as

{\vec{r}}^{4},

energy of the system will be proportional to

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 15

The wavelength of radiation emitted is

λ_{0}

when an electron jumps from the third to the second orbit of the hydrogen atom. For the electron which jumps from the fourth to the second orbit of hydrogen, the wavelength of radiation emitted will be

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 16

A hydrogen atom is in ground state. In order to get six lines in its emission spectrum, wavelength of incident radiation should be

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 18

The maximum wavelength that a sample of hydrogen atoms can absorb is

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 19

The lines in Balmer series have their wavelengths lying between

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 20

If an electron in hydrogen atom jumps from third orbit to second orbit, the frequency of the emitted radiation is given by (

c

is speed of light)

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 21

Let

F_{1}

be the frequency of second line of Lyman series and

F_{2}

be the frequency of first line of Balmer series then frequency of first line of Lyman series is given by

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Gamma Question Bank for Medical Physics>Chapter 29 - Atoms>Assigment>Q 22

The ratio of energies of hydrogen atom in its first excited state to third excited state is