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AIEEE 2009 Solved Paper

Section: Chemistry

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Question : 1 of 89

Marks: +1, -0

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

1.010^{3}m^{-1}

(Mass of proton

=1.67\times10^{-27}\,\mathrm{kg}

h=6.63\times10^{-34}\,\mathrm{J\,s}

$0.40\;\mathrm{nm}$
$2.5\;\mathrm{nm}$
$14.0\;\mathrm{nm}$
$0.32\;\mathrm{nm}$

Solution:

Wavelength

(\lambda)=\;\frac{h}{m v}

=\;\frac{6.63\times10^{-34}}{1.67\times10^{-27}\times10^{3}}

=0.4\times10^{-9}

=0.4\;\mathrm{nm}

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