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Any radiation in the ultraviolet region of hydrogen spectrum is able to eject photoelectrons from a metal. What should be the maximum value of threshold frequency for the metal?

A

`3.3xx10^(15)Hz`

B

`2.5xx10^(15)Hz`

C

`4.6xx10^(14)Hz`

D

`8.2xx10^(14)Hz`

Text Solution

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The correct Answer is:
A
`therefore upsilon =( c)/( lambda)`
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NARAYNA-ATOMS -EXERCISE -4
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  2. The electron in hydrogen atom makes a transition n(1)ton(2) where n1 a...

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  3. Any radiation in the ultraviolet region of hydrogen spectrum is able t...

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  4. A hydrogen atom emits a photon corresponding to an electron transition...

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  5. The wave number of energy emitted when electron jumps from fourth orbi...

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  6. In a Bohr atom the electron is replaced by a particle of mass 150 time...

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  7. If the wavelength of the first member of Balmer series of hydrogen spe...

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  8. A hydrogen like atom (atomic number Z) is in a higher excited state of...

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  9. Photon from n=2 to n=1 in hydrogen atom is made to fall on a metal su...

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  10. Let nu(1) be the frequency of the series limit of the lyman series n...

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  11. (a) (i) Find the wavelength of the radiation required to excite thye e...

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  12. Find the wavelength in a hydrogen spectrum between the range 500nm to ...

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  13. The largest wavelength in the ultraviolet region of the hydrogen spect...

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  15. If elements of quantum number greater than n were not allowed , the nu...

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  16. Magnetic field at the center (at nucleus) of the hydrogen like atom ("...

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  17. The recoil speed of a hydrogen atom after it emits a photon in going f...

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  18. The binding energy of an electron in the ground state of He atom is E(...

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  19. In hydrogen atom, the radius of n^(th) Bohr orbit is r(n). The graph B...

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