A black body at 1227°C emits radiations with maximum intensity at a wavelength of 5000 Å. If the temperature of the body is increased by 1000°C, the maximum intensity will be observed at
Q: A cavity radiator has its maximum spectral radiance at a wavelength of 6,9×10-7 m. If the body is…
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Q: The thermal (black-body) radiation from a star peaks at a wavelength of 300 nm. What is the surface…
A: Given wavelength corresponding to peak radiation is λp =300nm=300x10-9m
Q: Find the energy (in eV) of a photon with a frequency of 2.7 ✕ 10^16 Hz.
A: Solution:- Given frequency f=2.7 ×1016 Hz
Q: e spectrum of radiation from a blackbody at a temperature of T = 3500 K reaches a maximum at the…
A: GivenThe spectrum of radiation from a blackbody at a temperature, T1= 3500 K
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A: Given data: Color temperature of LED bulb is, T=3499 K.
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Q: The total power radiated per unit area from a blackbody is 78.0 MW/m2. Find (a) the temperature of…
A: Power per unit area, P = 78 MW/m2
Q: Find the energy (in eV) of a photon with a frequency of 4.2 ✕ 1016 Hz.
A: Given data: Frequency (f) = 4.2×1016 Hz Required: Energy of photon in eV
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A: A blackbody is an object that is capable of absorbing all the radiation that falls on it. It then…
Q: What is the frequency of an ultraviolet photon with wavelength 119 nm?
A: Given data The wavelength of the photon is given as λ=119 nm.
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A: The modulated wavelength of microwaves is determined by the speed of light in the medium through…
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Q: A copper cylinder with a temperature of 397 K is found to emit 199 J of energy each second. If the…
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Q: (a) Assuming an object at room temperature (T = 25 °C) behaves like an ideal thermal emitter,…
A: according to the guidelines we are allowed to attempt only one question so. Given an object is at…
Q: If the human body is considered as a blackbody calculate the maximum wavelength emitted.
A: Objects of different temperatures will have spectra that will peak at different temperatures. Thus…
Q: Find the energy (in eV) of a photon with a frequency of 4.8 ✕ 1016 Hz.
A: Calculate the energy of the proton. E = hf = 6.626*10-34* 4.8 ✕ 1016 = 3.18*10-17 J
Q: A black body has an area of 10.0 cm2 what is the power radiated when its temperature is 5000 K.
A: Power radiated by a black body is given by, P=σAeT4 Here σ is Stefan's constant, A is the surface…
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Q: A photoelectron is produced from a bismuth surface (which has a work function of 4.31 eV) at a speed…
A: Step 1:Given:The work function of Bismuth: W=4.31eVThe speed of the ejected photoelectron:…
Q: Suppose a star with radius 8.51 108 m has a peak wavelength of 689 nm in the spectrum of its…
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Q: The walls of a blackbody cavity are at a temperature of 30oC. What is the wavelength of the…
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Q: he unit surface of a black body at 37 °C radiates a number of electromagnetic waves with a certain…
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Q: Emergency responders for radioactive material incidents normally use the inverse square law of…
A: The inverse square law states that the intensity of any radioactive source decreaseswith the square…
Q: A cavity radiator has its maximum spectral radiance at a wavelength of 2,5×10-7 m. If the body is…
A: Given Data:-λmax=2.5×10-7mTemperature ratio, TTo=5.5Wien's constnt, b= 2.897×10-3m.k
Q: copper cylinder with a temperature of 307 K is found to emit 124 J of energy each second. If the…
A: Given T = 307 K Energy emitted per second = P = 124 J
Q: How much energy (in kJ/mol) does the helium-neon laser with a wavelength of 632.8 nm produce?The…
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Q: When ultraviolet radiation of 9.5 X 10 14 Hz is incident on a metal sheet, photoelectrons are…
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- Assume that your body (with temperature of 310 K) can be approximated as a blackbody. What is the typical wavelength of the radiation from your body? Is this radiation visible, infrared, X-ray, or radio?A square metal plate with a side 0.4m is heated to a temperature of 2000k by passing a current through it. Assuming that it behaves like a blackbody, how much power does the plate radiate under these conditions?Find the energy (in eV) of a photon with a frequency of 1.5 ✕ 1016 Hz.
- What temperature, in °C, is a blackbody whose emission spectrum peaks at 320 nm ? T= Submit Request Answer Part B VE ΑΣΦ T= Submit What temperature, in °C, is a blackbody whose emission spectrum peaks at 4.60 m? VE ΑΣΦ P By Request Answer ? Stag °C ? °CSuppose a star with radius 8.57 × 108 m has a peak wavelength of 680 nm in the spectrum of its emitted radiation. (a) Find the energy of a photon with this wavelength. J/photon (b) What is the surface temperature of the star? K (c) At what rate is energy emitted from the star in the form of radiation? Assume the star is a blackbody (e = 1). W (d) Using the answer to part (a), estimate the rate at which photons leave the surface of the star. photons/sThe human eye is most sensitive to 560-nm (green) light. What is the temperature of a blackbody that would radiate most intensely at this wavelength?
- The peak wavelength of radiation emitted by a black body at a temperature of 2000 K is 1.45 μm. If the peak wavelength of emitted radiation changes to 2.90 μm, then the temperature (in K) of the black body isFor a body emitting blackbody radiation, the total power emitted is proportional to the 4th power of the body’s absolute temperature:(T in kelvins)and the wavelength of the emitted EM radiation that has the highest intensity is inversely proportional to the body’s absolute temperature according to:( in meters, T in kelvins)Assume an object is emitting blackbody radiation. A body in a room at 300 K is heated to 3,000 K. The wavelength of the most intense EM radiation emitted by the body at 3,000 K is the wavelength of the most intense EM radiation at 300 K.In 1893, physicist Wilhelm Wien showed that the wavelength of maximum thermal emission strength of electromagnetic radiation from a blackbody at temperature T obeys: Amax T 2.898 mm.K. = This result, known today as Wien's Law, is very useful for, among other things, esti- mating the temperature of distant objects based on the color of light they emit. (a) Planck's spectral energy density function is usually written as an energy per range df of frequencies. Quite often, however, it is more convenient to express it as an