Mass of an electron is 9.1 ×10^-31 kg. If its kinetic energy is 3×10^25 joule. Then what is wavelength ??
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the wavelength of the electron is 8.9625 × 10–7 m.
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λ=h/(2mK.E) 1/2
= λ=6.626×10 −34/(2×9.1×10 −31 ×3×10 −25 ) 1/2
=1.2×10 −7 m
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