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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

    • Similar Questions

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    The frequency of radio waves corresponding to wavelength of 20 m is

    Calculate frequency of yellow radiation having wavelength 5800A^@ .

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