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Electrons from n = 2 to n= 1 in hydrogen...

Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a metal surface with work function 1.2ev. The maximum velocity of photo electrons emitted is nearly equal to

A

`6 xx 10^(5)` m/s

B

`3xx 10^(5)` m/s

C

`2 xx 10^(5)` m/s

D

`18 xx 10^(5)` m/s

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-ATOMS-EXERCISE -II
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  2. A hydrogen-like atom (atomic number Z) is in a higher excited state of...

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

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  4. Let vartheta(1) be the frequency of the series limit of the Lyman seri...

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  5. The transition from the state n = 4 to n = 3 in a hydrogen like atom r...

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  6. Energy required for the electron excitation in Li++ from the first to ...

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  7. What would be maximum wavelength for Brackett sereis of hydrogen-spect...

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

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  9. The wavelength of Lymen series for first number is

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  10. The magnetic moment (mu) of a revolving electron around the nucleus ve...

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

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

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  13. Ionization potential of hydrogen atom is 13.6 eV hydrogen atoms in the...

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  14. A hydrogen atom initially in the ground level absorbs a photon which e...

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

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  16. Hydrogen atom in ground state is excited by a monochromatic radiation ...

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  17. In the spectrum of hydrogen , the ratio of the longest wave length in ...

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  18. Given the value of Rydberg constant is 10^(7) ms^(-1) the wave number ...

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  19. When a -particles of mass 'm' moving with velocity 'V' bombards on a h...

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  20. The ratio of the wavelength of the last line of Balmer series and the ...

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