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1 mole photon having frequency 4.0 x...

1 mole photon having frequency 4.0 `xx 10^(14) Hz` find energy

Text Solution

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159.0 kJ `mol^(1)`
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Calculate energy of one mole of photons of radiation whose frequency is 5xx 10^(14) Hz (h = 6.626 xx 10^(34)j )

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Knowledge Check

  • The energy of one mole of photon having frequency 4 xx 10^(14) Hz is

    A
    `129 kj mol^(-1)`
    B
    `159 kj mol^(-1)`
    C
    `145 kj mol^(-1)`
    D
    `212 kj mol^(-1)`

  • Calculate the energy of 1 mole of photon whose frequency is 5xx 10^(14) Hz

    A
    19.951 * Kj
    B
    199.51 kJ
    C
    39.90 kj
    D
    399.0 kj

  • Energy of n photon having frequency v is……

    A
    `nhv^(2)`
    B
    `(nh)/(v)`
    C
    nhv
    D
    `(hv)/(n)`

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    The threshold frequency for a certain metal is 3.3 xx 10^(14) Hz . If light of frequency 8.2 xx 10^(14) Hz is incident on the metal, predict the cutoff voltage for the photoelectric emission.

    The work function of caesium metal is 2.14 ev. When light of frequency 6 xx10^(14)Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic energy of the emitted electrons, (b) Stopping potential, and (c) maximum speed of the emitted photoelectrons?

    The work function of caesium metal is 2.14 eV.When light of frequency 6xx10^(14) Hz is incident on the metal surface ,photoemission of electrons occurs.What is the (a)Maximum kinetic energy of the emitted electrons. (b)Stopping potential ,and (c )Maximum speed of the emitted photoelectrons?

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