Physics · 2015
NEET 2015 · 25 July · Code C · Q39
Light of wavelength 500 nm is incident on a metal with work function 2.28 eV. The de Broglie wavelength of the emitted electron is:
Light of wavelength $\displaystyle 500$ nm is incident on a metal with work function $\displaystyle 2.28$ eV. The de Broglie wavelength of the emitted electron is :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \geq 2.8 \times 10^{-9} \mathrm{~m}$
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