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The dissociation energy of $H_2$ is 430.53KJ. If $H_2$ is exposed to light energy of wavelength 253.7 nm , what $\%$ of light energy will be converted into kinetic energy?


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Energy associated with $H_2$ molecule corresponding to wavelength.
253.7 nm = $\large\frac{hc}{\lambda}$
$\%$ of light energy converted
Hence the answer is (a)
answered Feb 6, 2014 by sharmaaparna1

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