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Question
What is the de Broglie wavelength of a ball of mass 0.060 kg moving at a speed of 1.0 m/s?
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Solution
Mass of the ball, m = 0.060 kg
Speed of the ball, v = 1.0 m/s
Planck’s constant, h = 6.6 × 10−34 Js
De Broglie wavelength of the ball is given by the relation:
`lambda = h/(mv)`
= `(6.6 xx 10^(-34))/(0.060 xx 1)`
= 1.1 × 10−32 m
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