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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

4400 Å

B

1250 Å

C

1650 Å

D

1850 Å

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-ATOMIC STRUCTURE-Objective exercise - 1
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  2. The series corresponding to minimum wave- length transition in H-atom

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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. The wave number of limiting line in Balmer series of hydrogen atoms is

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  5. The wave number of limiting line in Balmer series of hydrogen atoms is

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  6. The first emision line of hydrogen atomic spectrum in the Balmer serie...

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  7. What is the wave length of H(b) line Balmer series of hydrogen spectru...

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  8. If in Hydrogen atom, an electron jumps from n(2) = 2 to n(1) = 1 in Bo...

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  9. The wavelength of the radiation emitted, when in hydrogen atom electro...

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  10. The first use of quantum theory to explain the structure of atom was m...

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  11. Bohr's theory is applicable to

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  12. Bohr's theory is not applicable to

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  13. (A) Bohr's third postulate states that the stationary orbits are these...

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  14. If the electron of a hydrogen atom is present in the first orbit. The ...

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  15. The angular momentum of an electron present in the excited state of hy...

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  16. According to Bohr's theory, the angular momentum of electron in 5th or...

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  17. The angular momentum of electron in 'd' orbital is equal to

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  18. The ratio of kinetic energy to the total energy of an electron in a Bo...

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  19. As an electron is brought from an infinite distance close to nucleus o...

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  20. When electron falls from a higher energy to a lower energy level the d...

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