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Show that the de Broglie wavelength for a material particle of rest mass mo and charge q, accelerated from rest through a potential difference of V volts relativistically is given by, (Symbols has their usual meanings. Use relativistic energy equation) λ=h/√[2mqV(1 (qV/2mc²))]?
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Show that the de Broglie wavelength for a material particle of rest ma...
De Broglie Wavelength for a Material Particle

The de Broglie wavelength for a material particle can be derived by considering the relativistic energy equation and the wave-particle duality of matter.

Relativistic Energy Equation

The relativistic energy equation relates the total energy (E) of a particle to its rest mass (mo) and its velocity (v). It is given by:

E = √[(mo*c²) + (pc)²]

Where c is the speed of light and p is the momentum of the particle.

Wave-Particle Duality

According to wave-particle duality, particles also exhibit wave-like properties. The wavelength (λ) associated with a particle is related to its momentum (p) by the de Broglie relation:

λ = h/p

Where h is the Planck's constant.

Derivation

1. Consider a material particle of rest mass mo and charge q, accelerated from rest through a potential difference of V volts.
2. The initial kinetic energy (K) of the particle can be calculated using the potential difference V as:

K = qV

3. According to the relativistic energy equation, the total energy (E) of the particle is given by:

E = √[(mo*c²) + (pc)²]

4. The momentum (p) of the particle can be calculated using the total energy (E) and the rest mass (mo) as:

p = √[(E² - (mo*c²)²)/c²]

5. Substituting the value of total energy (E) from step 3, we get:

p = √[(√[(mo*c²) + (pc)²]² - (mo*c²)²)/c²]

6. Simplifying the above equation, we get:

p = √[2moE - (mo²*c²)]

7. Substituting the value of kinetic energy (K) from step 2, we get:

p = √[2mo(qV) - (mo²*c²)]

8. Rearranging the equation, we get:

p = √[2moqV(1 - (qV/2mo*c²))]

9. Substituting the value of momentum (p) in the de Broglie relation, we get:

λ = h/p = h/√[2moqV(1 - (qV/2mo*c²))]

Conclusion

The de Broglie wavelength for a material particle of rest mass mo and charge q, accelerated from rest through a potential difference of V volts relativistically is given by the equation:

λ = h/√[2moqV(1 - (qV/2mo*c²))]
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Show that the de Broglie wavelength for a material particle of rest mass mo and charge q, accelerated from rest through a potential difference of V volts relativistically is given by, (Symbols has their usual meanings. Use relativistic energy equation) λ=h/√[2mqV(1 (qV/2mc²))]?
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