Physics · 2023
NEET 2023 · 7 May · Code E3 · Q26
The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are 2.14 eV, 2.30 eV and 2.75 eV respectively. If incident electromagnetic…
The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are $\displaystyle 2.14$ eV, $\displaystyle 2.30$ eV and $\displaystyle 2.75$ eV respectively. If incident electromagnetic radiation has an incident energy of $\displaystyle 2.20$ eV , which of these photosensitive surfaces may emit photoelectrons?
Official answer
From NTA’s final answer key for this paper.
(1)
Cs only
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NEET (UG) 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.