An electron moves with speed v in free space and has de Broglie wavelength λ₀. On entering a medium, its speed decreases by 20%, while its mass is treated as unchanged and the motion remains non-relativistic. If its de Broglie wavelength in the medium is αλ₀, what is α?

Physics · Photoelectric effect and dual nature of matter · debroglie duel nature of light

JEE Mains 2026 5 April Evening Shift

An electron moves with speed v in free space and has de Broglie wavelength λ₀. On entering a medium, its speed decreases by 20%, while its mass is treated as unchanged and the motion remains non-relativistic. If its de Broglie wavelength in the medium is αλ₀, what is α?

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