electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 . The work function of the metal is ?

Question

electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 ​ . The work function of the metal is ?

Arun · Answer

c = νλ∴ νo = c/λo = 3.0×108 ms-1/7000×10-10 m = 4.29×1014 s-1Work function (wo) = hνo = 6.626×10-34 Js×4.29×1014 s-1 = 2.842×10-19 J

Vikas TU · Answer

E=hc/lambda. also E=hvo C/lambda= vo 3 x 10^8 / 7000 x 10^-10 . ( 1 A = 10-10) vo = 4.281 x 10^14 s^-1 w0 = hv0 = 6.63* 10^-34 * 4.28*10^14 => 28.41 *10^-20 J

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electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 . The work function of the metal is ?

electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A⁰ . The work function of the metal is ?

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electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 ​ . The work function of the metal is ?

electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A0​ . The work function of the metal is ?

2 Answers

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electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A 0 . The work function of the metal is ?

electrons are emitted with zero velocity from a certain metal surface when it is exposed to radiations of wavelength 7000 A⁰ . The work function of the metal is ?