Illustrate the significance of de Broglie equation with an iron ball and an electron. i. 6.626 kg iron ball moving with 10 ms^-1.

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Illustrate the significance of de Broglie equation with an iron ball and an electron.

(i) 6.626 kg iron ball moving with 10 ms-1.

(ii) An electron moving at 72.73 ms-1.

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(i) λiron ball = $\frac{h}{mv}$

= 1 x 10-35m

(ii)   λiron ball = $\frac{h}{mv}$

$\frac{6.626}{662.6}$ x 10-3

= 1 x 10m

For an electron, the de Broglie wavelength is significant and measurable while for iron ball it is too small to measure, hence it becomes insignificant