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Lasers: Light Amplification and Applications

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Lasers: Light Amplification and Applications

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Questions and Answers

What is the full form of LASER?

Light amplification by stimulated emission of radiation

What is the main process used in LASER technology?

Stimulated emission

What is the significance of population inversion in laser operation?

To have more atoms in higher energy levels than lower levels

What are the characteristics of laser light?

Monochromatic, coherent, and intense Signup and view all the answers

Why is coherent light important in laser technology?

It allows for constructive superposition, resulting in high amplitude and directionality Signup and view all the answers

What is the work function?

The work function is the minimum energy needed for an electron to escape from a material. Signup and view all the answers

What is the significance of Planck's constant in the photoelectric effect?

Planck's constant determines the energy of a photon in the photoelectric effect. Signup and view all the answers

Explain the concept of quanta in relation to electromagnetic radiation.

Quanta refers to the discrete set amounts of energy emitted in the form of photons. Signup and view all the answers

How does the frequency of light affect the movement of electrons in the gold leaf experiment?

The frequency of light must be greater than or equal to the threshold frequency for electrons to escape with kinetic energy. Signup and view all the answers

Describe the ground state of hydrogen according to the Bohr model.

The ground state of hydrogen is the most stable state, with the electron closest to the nucleus. Signup and view all the answers