Calculate the wavelength (in nanometer) associated with a proton moving at $1.0 \times {10^3}{\rm{m}}{{\rm{s}}^{ - 1}}$ (Mass of proton $ = 1.67 \times {10^{ - 27}}{\rm{kg\;and\;}}h = 6.63 \times {10^{ - 34}}{\rm{\;Js}}$)

NEET UG CHEMISTRY MCQ: STRUCTURE OF ATOM

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Application +4 | -1

Calculate the wavelength (in nanometer) associated with a proton moving at

1.0 \times {10^3}\mathrm{m}{\mathrm{s}^{ - 1}}

(Mass of proton

= 1.67 \times {10^{ - 27}}\mathrm{kg\;and\;}h = 6.63 \times {10^{ - 34}}\mathrm{\;Js}

)

View answer and explanation

Correct option: B

0.40 nm

Option B (0.40 nm) is correct because it's calculated using the de Broglie wavelength formula:

\lambda = \frac{h}{mv}

, where h is Planck's constant, m is mass, and v is velocity.

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