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The De Broglie wavelength of 1 mg
grain of sand blown by a wind at the speed of
m/s is .... (h = 6.63 × 10-34 S.I. unit)
(а) 33.15 х 10 36 m (b) 33.15 х 10-33
(c) 33.15 × 10-30 m
(d) 33.15 x 1030 m

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