(b) To what temperature must the body be heated until its peak thermal radiation is in the red region of the electromagnetic spectrum (2 = 650 nm)?

Q: O Find the maximum frequency of X-rays produced by 30 kV electrons.

A:

Q: if we were to consider a wave on the electromagnetic spectrum that has the same frequency as the 52…

A: Given that:- ν=52Hzh=6.63×10-34

Q: The total power per unit area radiated by a black body at a temperature Tis the area under the…

A: The expression for the Planck’s law,   The expression for the total power radiated power unit area,

Q: Calculate the energy of a photon (in J) with a frequency of 2.00e+16 Hz?

A: The formula for the energy of a photon is:

Q: If the work function of a metal is 3 ev and the velocity of the free electron from the surface of…

A:

Q: ass (in kg) of

A: Givenλ=725 nm=725×10-9 m

Q: Does the Ray band towards or sway from the outgoing side of the surface normal?

A: Refraction of light occurs when it passes from one medium to another medium .

Q: What effect, if any, would you expect the temperature of a material to have on the ease with which…

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Q: Find the ratio of de-Broglie wavelengths associated with two electrons accelerated through 25 V and…

A: The de Broglie wavelength in terms of potential is given by  λ =12.27VAo

Q: When you cool a gas, how does this affect the de Broglie wavelength of the gas atoms?

A:

Q: A beam of 450 nm light is incident on a metal having work function 2:0 eV and placed in a magnetic…

A:

Q: The power radiated by a black body in P and it radiated maximum energy at wavelength, Ao . If the…

A:

Q: What is the frequency in Hertz of an X-ray with wavelength (9.00x10^-2) nm? (Give your answer to 3…

A:

Q: The Sun is approximately an ideal blackbody radiator with a surface temperature of 5800 K. (a) Find…

A:

Q: The work function of a surface is 5.0×10^−19 J. If light of wavelength of 300 nm is incident on the…

A: Given: The work function of the metal is 5x10-19 J. The wavelength of the light is 300 nm.

Q: ) if A = = 3i+4j +2K and B= -2i +6j +5k find A. B. (A. B. äojö a>)

A:

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

A:

Q: Does a lightbulb at a temperature of 2500 K produce aswhite a light as the Sun at 6000 K? Explain.

A: The expression for the Wien's displacement law is, λmT=bλm=bT..............(1) Here, λm is the…

Q: Ql: A nuclear bomb at the instant of explosion may be approximated to a blackbody of radius 1.3 m…

A: Given: The surface temperature of the bomb is 107 K. The radius of the bomb is 1.3 m. Introduction:…

Q: Calculate the de Broglie wavelength of (a) a 1.00 keV electron, (b) a 1.00 keV photon, and (c) a…

A:

Q: Which of the following is necessarily true?(a) Red light has more energy than violet light.(b)…

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Q: The temperature of a student’s skin is 33.0°C. At what wavelength does the radiation emitted from…

A: Convert the given temperature in degree Celsius to kelvin.

Q: If you know that the Debye temperature of silver is 215 K, then the maximum frequency of the phonons…

A:

Q: Find the ratio of population of higher energy state to lower energy state when the optical pumping…

A: The ratio of population of higher energy (E2) state to lower energy state (E2) at temperature T is…

Q: If a photoemissive surface has a threshold frequency of 4.6 x 104 Hz, calculate the in eV. Givenh =…

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Q: An electron has kinetic energy E = 295KeV which is equal to the energy of a photon. Let λ1 be the…

A:

Q: The walls of a blackbody cavity are at a temperature of 30oC. What is the wavelength of the…

A:

Q: Find the wavelength of the electromagnetic radiation, which emitted, when a photon of energy (4eV)…

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Q: It is initially observed that the maximum of the spectral radiance I(λ) of a blackbody is located at…

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Q: de Broglie wavelength is

A:

Q: 87 Show that AEIE, the fractional loss of energy of a photon dur- ing a collision with a particle of…

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Q: In the photoelectric phenomenon, assume that the intensity of the incident light is fixed, but the…

A:

Q: Compute for the wavelength of the following frequencies: 4. 11kHz 5. 50HZ

A:

Q: Show that the ratio of the Compton wavelength A, to the de Broglie wavelength A = h/pfor a…

A: The expression for the de-Broglie wavelength,   The expression for the Compton wavelength,

Q: Light of wavelength 327 nm is incident on an uncharged metal sphere of diameter 14.2 cm. If the work…

A:

Q: 14 GO A light detector has an ab- E (n) sorbing area of 2.00 x 10-6 m2 and absorbs 50% of the…

A: The given values are, Calculate the average power output of the source.

Q: Calculate the ratio of the kinetic energy of an electronto that of a proton if their wavelengths are…

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Q: The intensity of a beam of monochromatic light is doubled. Which of the following change may occurs…

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Q: Consider the electromagnetic radiation inside a kiln, with a volume of 1 m3 and a temperature of…

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Q: According to the simple de Broglie model, how many wavelengths are there in an electron wave in the…

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Q: Is visible light the only type of EM radiation that can cause the photoelectron effect?

A: PHOTOELECTRIC EFFECT- The Phenomena of emission of an electron from a metal surface when…

Q: If you know that the Debye temperature of silver is 215 K, then the maximum frequency of the phonons…

A:

Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?