If a star has a surface temperature of 9500K. What would be the frequency of the light given off at the peak wavelength, in Hertz?

Q: What is the wavelength of the peak of the black body radiation curve for the human body (T=310)?

A: Given data The temperature of the human body is given as T = 310 K.

Q: A blackbody radiator in the shape of a sphere has a surface area of 15 ^ 2 * m . if it has a…

A: Given data: Surface area of the blackbody, A = 152 m2  Temperature of the blackbody, T = 1200 K

Q: A certain blackbody emits electromagnetic radiation at 2500K. What is the wavelength of the…

A: From the Wien's law, λT=constant=2.898×10-3 m.K…

Q: The hottest ordinary star in our galaxy has a surface temperature of 53,000 K. What is the peak…

A: Using to the Wein's displacement law, λmax=2.8977×106nmKT

Q: Infrared observations of a star show that the star is most intense at a wavelength of 280 nm. What…

A: Write the expression for Wien’s law. λmaxT=2.898×10-3 m·KT=2.898×10-3 m·Kλmax

Q: A piece of iron is heated with a torch to a temperature of 928 K. How much more energy does it emit…

A:

Q: A blackbody radiator in the shape of a sphere has a surface area of 23m ^ 2 . If it has a…

A:

Q: A distant star has a peak wave length of 0.00000081 meters.  What is the temperature of that star?

A:

Q: If the energy of a photon is 0.044ev, what is its frequency in GHZ

A:

Q: What is the energy of a photon of violet light with a frequency of 7.40x 1014s-1?

A: Given The frequency of the violet light is f=7.40×1014 s-1. The energy of a photon of violet light…

Q: The temperature of an object resembling a blackbody is raised from 200K to 2000K. by how much does…

A: Assume the net radiated power corresponding to temperature T1 = 200 K is denoted by P1. Assume the…

Q: The temperature of the sun is about 6000°K and its radius is about 6.69 x108 km. What rate does…

A:

Q: What is the wavelength of an x-ray with frequency of 7.5 x 1017 Hz?

A: We Know thatλ=cfHeref=frequencyc=speed of lightλ=wavelength

Q: Human eyes are best equiped to see light which is in the yellow-green part of the spectrum because…

A:

Q: An x-ray photon of energy 3.20 x 10-15 J has what wavelength?

A:

Q: A radio transmitter broadcasts at a frequency of 119kHz. What is the wavelength of the wave? ( speed…

A: Given, The frequency of the broadcast signal is, f = 119 kHz = 119×103 Hz speed of the light in the…

Q: What is the frequency of the EM wave emitted most strongly by a glowing element on a stove with…

A: According to Wein's law , the wavelength emitted most strongly at a particular temperature is given…

Q: A photon has an energy of 2.44x10^-22 J.  What is its frequency?

A: Given Data: The energy of a photon is: E=2.44×10-22 J The energy of a photon is given by, E=hf Here,…

Q: A star has the peak of its blackbody spectrum occur at a wavelength of 284 nm. What is its…

A: As the wavelength of the peak is slightly less than the wavelength of blue light so this star will…

Q: What is the energy, in eV, of an x-ray photon with a wavelength of 7.00x10-2 nm?

A: (given)       Wavelength of x ray photon  = 7×10-2 nm…

Q: How many times heavier is a Helium atom compared to a Hydrogen atom?

A: Helium contains 2 neutrons and 2 protons whereas hydrogen contains only one proton.

Q: The Temperature of a blackbody increases from 200∘∘C to 400∘∘C. What is the change in the…

A: Intial temperature of blackbody (Ti) = 200oC Final temperature of blackbody (Tf) = 400oC

Q: What is the wave length, in nm, of a light wave with a frequency of 4*10^15 Hz?

A:

Q: If the temperature of a black body is increased from 500k to 1000k , by what factor, the rate of…

A: The rate of emission of energy from a Blackbody denoted by  j  is given by Stefan-Boltzmann Law…

Q: Roughly what frequency and what kind of light would you need to be able to separate an electron from…

A:

Q: Find the power per unit area radiated from the sun’s surface in the wavelength range 600.0 to 605.0…

A: Here,  Wavelength range= 600nm- 605nm To find: Power radiated per unit area.

Q: What is the wavelength of a radio wave of a frequency 100 MHz?

A:

Q: What is the frequency (in Hertz) of blue light that has a wavelength of 433 nm? [Hint: Write your…

A:

Q: Using the wavelength equation, determine the wavelength (λ) for a wave with a velocity (v) of…

A: Given wave velocity  = v = 3.00x108 m/s frequency = f = 5.45x1014 Hz We have calculate wavelength…

Q: By what fraction are the wavelengths in this star's spectrum shifted?

A: Using Doppler Effect,

Q: y would have been on, take the orbital

A: Given Eclipses at B are observed 22 minutes. Orbital diameter of earth= 3*1011 m

Q: If a sunspot has a temperature of 4,430 K and the sunspot can be considered a blackbody, what is the…

A: Write the expression for Wien’s law. λmaxT=2.898×10-3 m·Kλmax=2.898×10-3 m·KT

Q: The Temperature of a blackbody increases from 200∘C to 400∘C. What is the change in the frequency…

A: By weins displacement law (Lambda)mT = constant

Q: An FM radio station broadcasts at a frequency of 91.5 MHz. If you drive your car toward thestation…

A: Given The frequency of the FM radio station is f=91.5 MHz=91.5×106 Hz. The velocity of car or…

Q: What is the frequency of the EM wave emitted most strongly by a glowing element on a stove with…

A:

Q: A blackbody radiator in the shape of a sphere has a surface area of 152 m. It has a temperature of…

A: Energy emitted per second by a black body

Q: If the average temperature of the surface of the Sun is roughly 5780 Kelvin, the radiation emitted…

A:

Q: What is the wavelength of radio waves transmitted by a radio station with a frequency of 220 million…

A: Wavelength is,

Q: In the video, I show measurements of light intensity (measured in lux) from a flashlight at several…

A:

Q: If you see a red-hot star, you can be certain that its peak intensity is in the infrared region. Why…

A: The red hot star

Q: What is the wavelength corresponding to a frequency of 300 MHz?

A: Wavelength = c/f

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.