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Calculate the frequency corresponding t...

Calculate the frequency corresponding to the wavelength `4000 Å`

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The correct Answer is:
A, D
`v = (c )/(lambda) = (3 xx 10^(10))/(4000 xx 10^(-8)) = 7.5 xx 10^(14) s^(-1)`
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Knowledge Check

  • The frequency of radio waves corresponding to a wavelength of 10 m is

    A
    ` 3 xx 10 ^7 ` Hz
    B
    ` 3.3 xx 10 ^ 8 ` Hz
    C
    ` 3 xx 10^9 ` Hz
    D
    ` 3 xx 10 ^ ( - 7 ) ` Hz

  • If the energy of a photon corresponding to a wavelength of 6000 Å is 3.32 xx 10^(-19) J , the photon energy for a wavelength of 4000 Å will be

    A
    `1.4 eV`
    B
    `4.9 eV`
    C
    `3.1 eV`
    D
    `1.6 eV`

  • The frequency of light ray having the wavelength 3000 Å is

    A
    `9 xx 10^(13)` cycles/sec
    B
    `10^(15) ` cycles /sec
    C
    90 cycles/sec
    D
    3000 cycles/sec
    • CENGAGE CHEMISTRY-ATOMIC STRUCTURE-Exercises (Subjective)
    1. Calculate the frequency corresponding to the wavelength 4000 Å

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    2. What if the energy associated with a monochreomatic ultraviolet redia...

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    3. Calculate the wavelength of radiation emited when an electron in a hy...

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    4. Differentiate between the terms orbits and orbitals

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    5. Give the electron coeficient of the following elements .(19)K,(25)Mn,...

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    6. What is the maximum number of element that can be presents in a. 2...

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    7. Give the number of identical orbitals is a given energy level and th...

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    8. For n = 3 energy level ,haw many orbital of all kinds are possible ...

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    9. If the principal quantum has a value of 3 what are the permited va...

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    10. If the quantum number has a value of 2 what are the permited values ...

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    11. Which of the orbitals 1p ,2s,3p,3f are not position?

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    12. Which of the following sets of quantum number for orbitals in hydroge...

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    13. Give the electronic of the following a H^(o+)b.Li^(o+) c. F^(o+) d. N^...

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    14. Which of the following atoms and ions are isoelectronic (i.e. Have d...

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    15. If the energy different between the electronic stazte in 214.68 mol^...

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    16. A spectral line in the Lyman series of hydrogen atom has a wave nu...

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    17. Energy in the nth Bohr's is given by E = (-2.179 xx 10^(-18))/(n^(2...

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    18. Calculate the momentum of a particle which has a de Broglie wavelength...

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    19. The binding energy of electron in a metal is 193 kJ mol^(-1) .Find the...

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    20. An electron is accelerated to one -tenth the velocity of light suppose...

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