Threshold Frequency of Metal: 1.83e48Hz

In summary, the threshold frequency of metal refers to the minimum frequency of light needed to cause the emission of electrons from a metal surface. It is important in understanding the behavior of metals in various applications and can be determined through experimentation. Factors such as the type of metal, light intensity, and surface properties can affect the threshold frequency. This frequency also relates to the photoelectric effect as it is the minimum frequency required for electrons to be emitted.
  • #1
NayHoMa
1
0
Light of frequency 1.21e15 Hz illuminates a piece of tin, and the tin emits photoelectrons of maximum kinetic energy 1.96 eV. What is the threshold frequency of the metal?
Planck's Constant*Frequency = (Planck's Constant)(Threshold Frequency) + Maximum Kinetic Energy
1.21e15 = (6.63e-34)(x) + (1.96eV)
(1.21e15-3.136e-19)/6.63e-34 = X
Answer I got = 1.83e48Hz


might be in the wrong section, I apologize if it is
 
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  • #2
On the LHS, you did not multiply frequency with Planck's Constant.

It is alright other than that.
 

What is the threshold frequency of metal?

The threshold frequency of metal refers to the minimum frequency of light that is required to cause the emission of electrons from the surface of a metal. It is measured in hertz (Hz) and for most metals, it falls within the range of 1.83e48Hz.

Why is the threshold frequency of metal important?

The threshold frequency of metal is important because it helps determine whether or not a metal will emit electrons when exposed to light. This is crucial in understanding the behavior of metals in various applications, such as in photovoltaic cells and photoelectric devices.

How is the threshold frequency of metal determined?

The threshold frequency of metal can be determined through experimentation. The frequency of light is gradually increased until electrons are emitted from the metal surface. The minimum frequency at which this occurs is then measured and recorded as the threshold frequency.

What factors can affect the threshold frequency of metal?

The threshold frequency of metal can be affected by factors such as the type of metal, the intensity of the light, and the surface properties of the metal. Additionally, the presence of impurities or other substances on the metal surface can also influence its threshold frequency.

How does the threshold frequency of metal relate to the photoelectric effect?

The photoelectric effect is the phenomenon where electrons are emitted from a metal surface when exposed to light. The threshold frequency of metal is the minimum frequency of light required to cause this effect. This means that if the frequency of light is below the threshold frequency, no electrons will be emitted, and the photoelectric effect will not occur.

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