Determine the wavelength of proton that has been accelerated through a pd of 200V.
Answer
Wavelength of proton can be given as
λ=h2mev\lambda=\frac{h}{\sqrt{2mev}}\\λ=2mevh
λ=6.62×10−342(1.67×10−27)(1.6×10−19)(200)λ=202.5nm\lambda=\frac{6.62\times10^{-34}}{\sqrt{2(1.67\times10^{-27})(1.6\times10^{-19})(200)}}\\\lambda=202.5nmλ=2(1.67×10−27)(1.6×10−19)(200)6.62×10−34λ=202.5nm
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