Dual behaviour of matter proposed by de Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other type of material. If the velocity of the electron in this microscope is 1.6 x 106 m s-1, calculate de Brogile wavelength associated with this electron.
Dual behaviour of matter proposed by de Broglie led to the discovery of electron microscope often used for the highly magnified images of biological molecules and other type of material. If the velocity of the electron in this microscope is 1.6 x 106 m s-1, calculate de Brogile wavelength associated with this electron.
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1 Answer
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As per de Brogile’s equation,
λ = h / mv = (6.626 x 10-34 kg m2 s-1) / (9.1 x 10-31 kg) x (1.6 x 106 ms-1)
= 0.455 x 10-9 m = 0.455 nm = 455 pm.
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