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Compton Effect - 1 Video Lecture | Crash Course for IIT JAM Physics

FAQs on Compton Effect - 1 Video Lecture - Crash Course for IIT JAM Physics

1. What is the Compton Effect?

Ans. The Compton Effect refers to the phenomenon where X-rays or gamma rays scatter off electrons, resulting in a change in the wavelength of the incident radiation. This effect demonstrates the particle-like properties of electromagnetic radiation and supports the theory that light can behave as both a wave and a particle.

2. How does the Compton Effect illustrate the particle nature of light?

Ans. The Compton Effect illustrates the particle nature of light by showing that photons (light particles) collide with electrons, similar to billiard balls colliding. During this collision, energy and momentum are transferred, leading to a longer wavelength (lower energy) of the scattered photon, which is consistent with the principles of conservation of energy and momentum.

3. What are the implications of the Compton Effect in modern physics?

Ans. The implications of the Compton Effect in modern physics include providing evidence for quantum mechanics and the duality of light. It also plays a crucial role in fields such as astrophysics, medical imaging, and radiation therapy, where understanding photon-electron interactions is essential for advancements in technology and treatments.

4. What is the formula used to calculate the change in wavelength in the Compton Effect?

Ans. The change in wavelength due to the Compton Effect can be calculated using the formula: Δλ = λ' - λ = (h/m_ec)(1 - cos θ), where Δλ is the change in wavelength, λ' is the wavelength after scattering, λ is the initial wavelength, h is Planck's constant, m_e is the electron mass, c is the speed of light, and θ is the scattering angle.

5. In what year was the Compton Effect discovered and by whom?

Ans. The Compton Effect was discovered in 1923 by American physicist Arthur H. Compton. His work on this effect earned him the Nobel Prize in Physics in 1927, as it significantly contributed to the understanding of quantum theory and the nature of electromagnetic radiation.

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Sep 21, 2025 Last updated

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