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Plot a Graph Showing the Variation of De Broglie Wavelength (X) Associated with a Charged a Particle of Mass M, Versus 1 √ V Where V - Physics

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Plot a graph showing the variation of de Broglie wavelength (X) associated with a charged a particle of mass m, versus  `1/sqrtV` where V is the potential difference through which the particle is accelerated. How does this graph give us information regarding the magnitude of the charge of the particle? 

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Solution

The slope of the graph is `h/sqrt(2mq)`considering we know the slope and mass of the charged particle we can easily calculate the charge. 

Concept: De Broglie’S Explanation of Bohr’S Second Postulate of Quantisation
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