1.

What is the de - Broglie wavelength associated with an electron, accelerated through a potential difference of 100 Volts ?

Answer»

Solution :Accelerating potential `V = 100 V`. The de BROGLIE wavelength `lambda` is
`lambda=h//p=(1.227)/(sqrt(V))=NM`
`lambda=(1.227)/(sqrt(100))nm=0.123nm`
The de Broglie wavelength ASSOCIATED with an electron in this case is of the order of X-ray WAVELENGTHS.


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