Question
Download Solution PDFDe Broglie relation is represented by ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
de Broglie wavelength of electrons:
- Louis de Broglie theorized that not only light possesses both wave and particle properties, but rather particles with mass - such as electrons - do as well,i.e. matter has dual nature.
- The wavelength of material waves is also known as the de Broglie wavelength.
- de Broglie wavelength (λ) of electrons can be calculated from Plancks constant h divided by the momentum of the particle
- So, according to de Broglie, every object has a dual nature- a particle and a wave nature whose wavelength is given by
or
where m is the mass of the particle,v is the velocity of the particles and h is the Planck's constant.
- The wave nature is predominant in particles of small mass like electrons and negligible in bodies of large masses.
- Waves are dispersed over a wide region and not confined.
Hence, De Broglie relation is represented by λ = h/p.
Important Points
- The wave associated with each moving particle is called matter waves.
- Characteristics of Matter waves:
- The lighter the particle, the greater is the de Broglie wavelength.
- The higher the velocity of the particle, the smaller is its de Broglie wavelength.
- The de Broglie wavelength of a particle is independent of the charge or nature of the particle.
- The matter waves are not electromagnetic in nature. Only charged particles produce electromagnetic waves.
Last updated on Jul 4, 2025
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