What is the de Brogile wavelength of an electron that strikes the back of the face of a TV screen at 0.1 the speed of light? The speed of light is 2.998 × 108 m/s. Answer in units of m.

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Given,

velocity = 0.1 the speed of light = 2.998 x 10^7 m/s

mass of electron = 9.109 x 10^-31 Kg

We know,

De Brogile wavelength = h/mv

where, h = Planck's constant = 6.63 x 10^-34 J.s

so, wavelength = (6.63x10^-34) / (9.109 x10^-31 x 2.998 x 10^7)

De brogile wavelength = 2.45 x 10^-11 m

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Jul 15th, 2015

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