Photoelectric current does not increase with the frequency of the incident wave
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REFUTED
the evidence says no
refutedsupported
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Reference literature and scientific manuals establish that the photoelectric current and electron emission characteristics are dependent on the frequency of the incident beam.
Contrary to what the wave model of light predicted, an increase in the intensity of light resulted in an increase in current, not an increase in the kinetic energy of the emitted electron. Einstein later explained this difference by showing that light was comprised of quantized packets of energy called photons. His work on the photoelectric effect earned him the Nobel Prize. The photoelectric effect has many practical applications, as current may be generated from a light source. Generally, the photoelectric effect is used as a component in switches that respond to light. Some examples are nightlights and photomultipliers. Usually the current is so small that it must be amplified in order to be an effective switch
Energy of a Photon
The energy of a photon is a discrete quantity determined by its frequency. This result can be determined experimentally by studying the photoelectric effect. The kinetic energy of an emitted electron varies directly with the frequency of the incident light. If the experimental values of these energies are fitted to a line, the slope of that line is Planck's constant.
work function, increase in frequency of incident beam increases the intensity of the photoelectric current . Above the threshold frequency , the maximum kinetic
Ceteris paribus, the negative Joshi effect —Δi in oxygen under electrical excitation increases linearly with the frequency v of the irradiating light: −Δi/iD=A(ν−νm),where iD is the rms current in dark, vm the minimum threshold frequency, and Λ a constant dependent upon the nature of the electrode surface, gas pressure, applied potential V, etc. vm decreases with increase in V because of the occurrence of the photoelectric analog of the Schottky effect. The increase in —Δi with v(>vm) is the consequence of a similar variation in the photoelectric yield. Superimposed on this are factors which t
simultaneously both particle and wave-like properties. This new approach came from Louis de Broglie who built upon Einstein's conception that light possessed particle-like properties in his attempt to explain the photoelectric effect. Photoelectric Effect
Albert Einstein showed that the dependence on frequency could not be justified by the classical wave theory alone, so he provided a particle perspective. In 1905 he declared that photons (named by G.N. Lewis), were "particles of light" that had similar energy to that of Planck's equation. This equation states that the frequency and energy of a quantum of electromagnetic radiation are proportional. Einstein's idea was revolutionary because he brought a new perspective at looking at light not only as a wave, but as a particle. Planck's equation: E=hv Planck's constant: h=6.626x10-34 Js
The photoelectric effect phenomenon that electrons are emitted when light strikes the surface of metals was discovered by Heinrich Hertz in 1888. This process holds true when the incident light has a higher frequency than a certain threshold value.
minimum frequency , higher intensity light will give more electrons. The photoelectric effect allows us to derive an equation linking the frequency of electromagnetic
According to Einstein, the electrons leave a photo-electric surface with an initial velocity proportional to the frequency of the impinging radiation. Consequently, when a sawtooth potential is applied to a photoelectric cell, illuminated by a monochromatic light, the current flow starts at a threshold potential corresponding to the wave-length of the light, and then gradually increases more or less linearly toward a saturation value. When light of assorted wave-lengths is applied, the total current is the summation of the currents for the individual wave-lengths, each of which currents has it
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