An electron of mass 9.1x 10^31 kg is travelling at a speed of 2.0 x 10^6ms¯¹. Calculate the associate wavelength of the electron. [h = 6.6. x 10^34 Js]

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A. 3.63 x1010 m
B. 3.63 x 10−8 m
C. 3.63 x 10−7 m
D. 6.89 x 10−4 m

Correct Answer:

Option A = 3.63 x1010 m

Using ½mv2 = hf

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