Q. Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 × 103 ms−1
(Mass of proton = 1.67 × 10−27 kg and h = 6.63 × 10−34 Js )
A. 0.032 nm
B. 0.40 nm
C. 2.5 nm
D. 14.0 nm
Answer: 0.40 nm
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