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Engineering Physics Quiz

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Questions and Answers

What does LASER stand for?

Light Absorption by Spontaneous Emission of Radiation

Luminous Amplification by Stimulated Emission of Radiation

Light Amplification by Stimulated Emission of Radiation (correct)

Luminous Absorption by Spontaneous Emission of Radiation

Who provided the mathematical expression for stimulated emission in 1917?

Maiman

Einstein (correct)

Planck

Feynman

What is the mathematical expression for Planck's law?

$E = -4(x + 3)^2 + 2$

$E = mc^2$

$E = E_2 - E_1 = h\nu$ (correct)

$E = \frac{hc}{\lambda}$

What did Theodore Maiman create in 1960?

First working laser (ruby laser) Signup and view all the answers

What is the expression for energy density of black body radiation at any frequency and temperature?

$u(\nu, T) = \frac{8\pi h\nu^3}{c^3} \frac{1}{e^{\frac{h\nu}{kT}} - 1}$ Signup and view all the answers

What is the acronym LASER stands for?

Light Amplification by Stimulated Emission of Radiation Signup and view all the answers

What did Theodore Maiman create in 1960?

Working laser (ruby laser) Signup and view all the answers

What is the mathematical expression for energy density of black body radiation at any frequency and temperature?

$8rac{ ext{πh}ν^3}{c^3} rac{1}{{e^{rac{hν}{kT}} - 1}}$ Signup and view all the answers

What is the energy output when an electron falls from one energy level to another according to Planck's law?

$E_2 - E_1 = hν$ Signup and view all the answers

What is the role of input energy in raising an electron from one energy level to another?

Input energy is required Signup and view all the answers

Study Notes

Laser Technology and Planck's Law

LASER stands for Light Amplification by Stimulated Emission of Radiation.
In 1917, Albert Einstein provided the mathematical expression for stimulated emission.
The mathematical expression for Planck's law is: Bv(T) = (hv^3) / (c^2) * 1 / (e^(hv/kT) - 1).
Theodore Maiman created the first working laser in 1960.
The energy density of black body radiation at any frequency and temperature is given by: u(v,T) = (8πhv^3) / (c^3) * 1 / (e^(hv/kT) - 1).
When an electron falls from one energy level to another, the energy output is given by: ΔE = hf, where hf is the energy of the emitted photon.
Input energy raises an electron from one energy level to another, allowing it to transition to a higher energy state.

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Description

Test your understanding of engineering physics with this quiz covering topics such as black body radiation, laser principles, Planck's energy density expression, and the interaction of radiation with matter. This quiz is based on Unit IV: Application of Quantum Mechanics to Optical Waves and includes suggested readings for further study.