what do you mean by threshold frequency in photoelectric effect?
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In radiation: The photoelectric effect. The photoelectric threshold frequency, symbolized by the Greek letter nu with subscript zero, ν0, is that frequency at which the effect is barely possible; it is given by the ratio of the work function symbolized by the Greek letter psi, ψ, to Planck's constant (ν0 =…
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Wavelength is the distance between identical locations on adjacent waves (see figure below). Frequency is the number of complete waves, or wavelengths, that pass a given point each second. All light travels at the same speed, but each color has a different wavelength and frequency.
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where ν is the radiation frequency, λ is the radiation wavelength, and c is the speed of light. The interpretation of this equation is that wavelength and frequency are related. Electromagnetic radiation of long wavelength must have a low frequency, whereas radiation of short wavelength must have a high frequency.
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Voltage is pressure or a force that can drive a flow of electrons given the chance. ... Hertz is a measure of frequency. It is used in AC to show the rate of change. It was measured in Cycles per second but now is in Hertz but they are both the same.
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For a given metal and frequency of incident radiation, the rate at which photoelectrons are ejected is directly proportional to the intensity of the incident light.
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What characteristic of light determines the amount of energy carried by a photon of that light? Answer: (2) frequency determines the energy carried by a photon.
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The electromagnetic spectrum: Light The region between 400 nm and 700 nm is what plants use to drive photosynthesis and is typically referred to as Photosynthetically Active Radiation (PAR).
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Frequency and time period. f is the number of waves produced by a source per second, it is measured in hertz (Hz). T is the time it takes for one complete oscillation , it is measured in seconds.
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In electronics, switching frequency refers to the rate at which an electronic switch performs its function. Switching frequency is an important design and operating parameter in systems such as: The Class-D amplifier, an audio power amplifier with a switched-mode output. ... Switched-mode power supply. Power inverter.
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Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 380 to 740 nanometers. In terms of frequency, this corresponds to a band in the vicinity of 405–790 THz.
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Gamma-rays fall in the range of the EM spectrum above soft X-rays. Gamma-rays have frequencies greater than about 10^19 cycles per second, or hertz (Hz), and wavelengths of less than 100 picometers (pm), or 4 x 10^9 inches. (A picometer is one-trillionth of a meter.)
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The current depends upon the intensity of the light and the no. of particles and Energy depends upon the threshold frequency. So, this is the basic difference between particle and wave nature. There is no difference between a wave and a particle.
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The frequency (f) of an oscillation is measure in hertz (Hz) it is the number of oscillations per second. The time for one oscillation is called the period (T) it is measured in seconds.
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Frequency, f, is how many cycles of an oscillation occur per second and is measured in cycles per second or hertz (Hz). The period of a wave, T, is the amount of time it takes a wave to vibrate one full cycle. These two terms are inversely proportional to each other: f = 1/T and T = 1/f.
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The processing rate – aka the refresh rate – tells you how fast the images are flashing up on the screen. In the technical specifications, you'll usually see it measured in hertz (Hz) – the higher the number, the more times per second the image refreshes on your screen. This makes the picture smoother and less blurry.
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Each photon has a wavelength and a frequency. The wavelength is defined as the distance between two peaks of the electric field with the same vector. The frequency of a photon is defined as how many wavelengths a photon propagates each second. Unlike an electromagnetic wave, a photon cannot actually be of a color.
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Which of these is constant for ALL types of electromagnetic radiation in a vacuum? The frequency of a water wave gives us its height. If a new wave arrives on shore every two seconds, then its frequency is 2 Hz. Radio waves, visible light, and X-rays are all a type of electromagnetic radiation.