Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 x 103 ms-1 (Mass of proton = 1.67 x 10-27 kg and h = 6.63 x 10-34 Js)

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0.032 nm

0.40 nm

2.5 nm

14.0 nm

answer is B.

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Detailed Solution

λ=hmv=6.63×10-341.67×10-27×1×103=3.97×10-10 m~0.40 nm

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