Consider the electromagnetic radiation inside a kiln, with a volume of 1 m3 and a temperature of 1500 K. What fraction of all the energy is in the visible portion of the spectrum, with wavelengths between 400 nm and 700 nm?

Q: The temperature of the surface of Pluto is about T(K) = 40 K (TC = -230 °C). %3! According to Wien's…

A: Frequency f is related to wavelength  λ is given by f=C/λ, where C= speed of light

Q: An FM radio station broadcasts at 70 megahertz (MHz). What is the wavelength of each photon (in…

A:

Q: A 100-WW incandescent light bulb has a cylindrical tungsten filament 35.0 cm long, 0.41 mmmm in…

A: The given problem is based on Stefan-Boltzmann law and wine's displacement law. Stefan laws stated…

Q: A LED household bulb is marked with a colour temperature of 3499 K, calculate the peak wavelength…

A: Given data: Color temperature of LED bulb is, T=3499 K.

Q: A photon has a frequency of 9.00 x10-14 s-1. What is the wavelength?  Is the photon visible?

A:

Q: According to the electromagnetic spectrum, ultraviolet rays range in wavelength from about 1.00 nm…

A: To be given,wavelength:λ1= 1 nmλ2= 400 nm

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: What is the frequency of a photon with wavelength of 400nm?

A: Given that,Wavelength, λ=400 nm=400×10-9 mWe know thatspeed, c=λfthen frequency, f=cλ      equation…

Q: A blackbody has a temperature of 5 K. At what wave-length is it brightest?

A: A black body is defined as an ideal body that can absorb all the radiations that fall on it.   The…

Q: Use the formula λ m T = 0.29 cm K to obtain the characteristic temperature ranges for different…

A:

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.

Q: A microwave oven operates by emitting light of frequency of 2.45 GHz. What is the energy of a photon…

A: Frequency of the emitted photon ϑ = 2.45 GHz = 2.45×109 Hz Energy of a photon with a frequency ϑ is…

Q: What is the energy of a 858 nm photon in eV? (Note: Planck's constant for eV units is 4.135 1o 15…

A: Given: The wavelength of light is 858 nm.

Q: The characteristic red color of blood is due to the very strong absorption of light at a wavelength…

A:

Q: Consider the following classes of electromagnetic radiation: ultra-violet, microwave, and infrared.…

A: Energy of photon = hv v = frequency of light

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

A:

Q: The spectrum of light from a star is, to a good approximation, a blackbody spectrum. The red…

A:

Q: An infrared satellite measures outgoing radiation that leaves Earth's surface through an atmospheric…

A: The expression for the spectral radiance is, Fλ=2πhc2λ5ehcλkT-1

Q: To what temperature must we heat an object until its peak thermal radiation is in the red region of…

A: The wavelength of the thermal radiation coming from an object can be calculated by assuming the…

Q: The carbon-dioxide laser is one of the most powerful lasers developed. The energy difference between…

A: Given:-            Energy difference between two laser levels = 0.117 eV → We know that atoms emit…

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…

Q: What is the energy (in eV) of a 450-nm photon of blue light?

A:

Q: A spectral emission line is electromagnetic radiation that is emitted in a wavelength range narrow…

A: Write the expression for the energy in terms of wavelength,

Q: The red lasers used to read the barcodes of products at the grocery stores produce light with a…

A: Power is defined as work done per unit time. Thus, the energy radiated as light can be calculated by…

Q: A photon carries 2.56 eV of energy. What is the photon's frequency? (h= 6.626 x 10-34 J-s; 1 eV =…

A: Given: The energy of the photon is 2.56 eV.

Q: How many photons per second are emitted by the antenna of a microwave oven, if its power output is…

A:

Q: Assume that your body (with temperature of 310 K) can be approximated as a blackbody. What is the…

A:

Q: How much energy is carried by light with a wavelength of λ = 509 nm? Express your answer in eV…

A: Given data:  Wavelength (λ) = 509 nm = 509×10-9 m Required: The energy of light in eV