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A hydrogen atom emits a photon correspon...

A hydrogen atom emits a photon corresponding to an electron transition from n=5 to n=1. The recoil speed of hydrogen atom is almost (mass of proton `=1.6xx10^(-27)` kg).

A

`10^(4)` m/s

B

`2xx 10^(-2)` m/s

C

4 m/s

D

`8 xx 10^(-2)` m/s

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The correct Answer is:
C
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AAKASH SERIES-ATOMS-EXERCISE -II
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  3. A hydrogen atom emits a photon corresponding to an electron transition...

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  5. If the radius of the first Bohr orbit of the H atom is r then for the ...

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  8. Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a met...

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  10. The transition from the state n = 4 " to " n = 3 in a hydrogen like at...

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  11. Energy required for the electron excitation in Li^(++) from the first ...

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  12. What would be maximum wavelength for Brackett series of hydrogen-spect...

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  13. What would be the radius of second orbit of He^(+) ion?

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  14. The wavelength of Lymen series for first number is

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  15. The principal quantum number, n describes

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  16. What is ratio of Bohr magneton to the nuclear magneton?

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  17. Out of the following which one is not a possible energy for a photon t...

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  18. Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in th...

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  19. A hydrogen atom initially in the ground level absorbs a photon and is ...

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  20. The speed of the electron in a hydrogen atom in the n = 3 level is

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