the threshold frequency of metal is 1.3 ...

the threshold frequency of metal is `1.3 xx 10_5`Hz the minimum energy required to eject the electron from metal surface is (h=`6.62 xx 10^-34` Js)

`8.6xx10^-19`J

`7.8xx10^-16`J

`2.3xx10^-19`J

`6.4xx10^-19`J

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The minimum energy required to ejected an electron from the surface of a metal is called............ .

A photon of energy 8 eV is incident on a metal surface of threshold frequency 1.6 xx 10^(15) Hz , then the maximum kinetic energy of photoelectrons emitted is ( h = 6.6 xx 10^(-34) Js)

The work function of a metal is 3.3 xx10^(-19)J . The maximum wavelength of th e photons required to eject photoelectrons from the metal is (Take h=6.6xx10^(-34)Js )

A photon of energy 8 eV is incident on metal surface of threshold frequency 1.6 xx 10^(15) Hz , The maximum kinetic energy of the photoelectrons emitted ( in eV ) (Take h = 6 xx 10^(-34) Js ).

Assertion(A): Threshold frequency is a characteristic for a metal Reason(R): Threshold frequency is a maximum frequency required for the ejection of electron from the metal surface.

The minimum energy required for the emission of photoelectron from the surface of a metal is 4.95 xx10^(-19)J . Calculate the critical frequency of the photon required to eject the electron . h = 6.6 xx10^(-34) J sec

The threshold frequency for a photosensitive metal is 3xx10^(14)Hz . The work function of the metal is approximately equal to [h=6.66xx10^(-34)Js]

Derive an expression for the total energy of electron in n^(th) Bohr orbit. Hence show that energy of the electron is inversely proportional to the square of principal quantum number. Also define binding energy. The photoelectric threshold wavelength of a metal is is 230nm . Determine the maximum kinetic energy in joule and in eV of the ejected electron for the metal surface when it is exposed to a radiation of wavelength 180nm . [Plank's constant: h=6.63xx10^(-34)Js , Velocity of light: c=3xx10^(8)m//s ]

The threshold frequency of metals 4 x 10^(14) s^(-1) The minimum energy which photons must possess to produce photoelectric effect with the metal is (h=6.6 xx 10^(-34) Js)

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