Question

The work function for aluminum is 4.2 eV. (a) What is the cutoff
frequency of light

incident on an aluminum target that releases photoelectrons from
its surface? (b) Find the

corresponding cutoff wavelength. (c) If photons of energy 5.5 eV
are incident on an

aluminum target what is the maximum kinetic energy of the ejected
photoelectrons? (d)

what is the maximum velocity of a photoelectron traveling from the
anode to the cathode

of a photocell? (d) If a red laser beam with � = 640 nm hits the
aluminum target, what

will be the kinetic energy of the emitted photoelectrons?

Answer #1

Thanks

The work function for aluminum is 4.2 eV. (a) What is the cutoff
frequency of light
incident on an aluminum target that releases photoelectrons from
its surface? (b) Find the
corresponding cutoff wavelength. (c) If photons of energy 5.0 eV
are incident on an
aluminum target what is the maximum kinetic energy of the ejected
photoelectrons? (d)
what is the maximum velocity of a photoelectron traveling from the
anode to the cathode
of a photocell? (d) If a blue beam...

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If the work function of a material is 2.20 eV, what frequency of
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5.92 × 1014 Hz
3.53 × 1014 Hz
1.02 × 1014 Hz
2.50 × 1014 Hz
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Electromagnetic waves with a wavelength of 280 nm strike the
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Ans in eV
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Copper has a work function of 4.70 eV, a resistivity of
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