Distinguish between radiative- and non-radiative transitions and give an example of  each.

Q: Using Wien's displacement law, calculate frequency for high energy density at temperature of 1000 K…

A: The energy density is given as  uν=8πν2c3hνehνKT-1 ........................................ (1)…

Q: Based on your understanding on the anomalous expansion of water. What for you is the best…

A: The anomalous expansion of water is the property of water where it expands instead of contracting…

Q: photon

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Q: Define photocell.

A: A device in which the photoelectric or photovoltaic effect or photoconductivity is used to produce a…

Q: All of the Sun's energy which we calculated as the luminosity (the rate at which energy is radiated…

A: Given: The distance of Earth from the Sun is r=1.49×1013 cm. Introduction: Luminosity is an absolute…

Q: If a photon has a given wavelength (units of m), how do I calculate its energy in units of joules?…

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Q: How does emission take place?

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Q: What does the Wien Displacement Law (also known as Wien's Law) tell us? a) There is an inverse…

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Q: All of the Sun's energy which we calculated as the luminosity (the rate at which energy is radiated…

A: Given: The distance of Earth from the Sun is 1.49×1013 cm. Introduction: Luminosity s a measure of…

Q: explain how emission and absorption involve semiclassical physics?

A: Introduction: When the atom absorbs a photon from the light of proper frequency, it goes to the…

Q: Assuming Suns surface temperature as 5779 K calculate the maximum wavelength emitted by the Sun?

A: As per Wein's displacement law, the peak wavelength emitted by a blackbody at a given temperature is…

Q: Calculate energy radiated by a perfectly black sphere of radius 2 cm in one minute maintained at…

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Q: Describe the photoelectric effect and why it was relevant to the development of our understanding of…

A: Introduction : Photoelectric effect was discovered by Einstein in 1905.

Q: Lamp black and platinum black are used as perfect black body one for the absorption of heat…

A: an ideal black body , which absorbs all types of radiations falls on it. this is true for the…

Q: Compare and contrast briefly the processes of nuclear fusion in the Sun, and on Earth in fusion…

A: Nuclear Fusion in the Sun: Nuclear fusion occurs at the Sun's core, releasing a massive quantity of…

Q: Suppose YOUR body temperature averages 98.6 F. 1. How much radiant energy in Wm^-2 is emitted from…

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Q: If sun were to become a balck hole what will its temperature be?

A: Every object has a limit to which it can shrink before it undergoes irreversible gravitational…

Q: a) To which object corresponds this spectrum to?          b) What is the source of radiation for…

A: a) The following spectrum corresponds to a planet as it shows the continuous spectrum of visible…

Q: A composite plane wall consists of a L, = 75 mm thick layer of insulation ( k; = 0.05 W/m-K) and a…

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Q: In the diagram shown below, oxygen is pumped from left to right through a pipe with varying…

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Q: Differentiate between continuous spectra and line spectra, and explain their causes.

A: The main difference between continuous spectrum and line spectrum is that line spectra can be seen…

Q: В +9 ● B +q Б О Ⓡ Ⓡ F = 0 Ⓡ ®

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Q: Differentiate temperature inversions from radiation inversions. When do these inversions happen?

A: It is the deviation from the normal change of an atmospheric property with altitude. Normally, air…

Q: some objects radiate thermal energy?

A: Thermal radiations are those radiations which produce in us the sensation of warmth due to of its…

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.