Physics · 2021
NEET 2021 · 12 September · Code M1 · Q33
An electromagnetic wave of wavelength ' λ ' is incident on a photosensitive surface of negligible work function. If ' m ' mass is of photoelectron…
An electromagnetic wave of wavelength ' $\displaystyle \lambda$ ' is incident on a photosensitive surface of negligible work function. If ' m ' mass is of photoelectron emitted from the surface has de-Broglie wavelength $\displaystyle \lambda_{\mathrm{d}}$, then :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \lambda=\left(\frac{2 m c}{h}\right) \lambda_d{ }^2$
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NEET (UG) 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.