Physics · 2020
JEE Main · 4 September 2020, Shift 1 · Q20
Given figure shows few data points in a photo electric effect experiment for a certain metal. The minimum energy for ejection of electron from its…
Given figure shows few data points in a photo electric effect experiment for a certain metal. The minimum energy for ejection of electron from its surface is : (Plancks constant $\displaystyle \mathrm{h}=6.62 \times 10^{-34} \mathrm{~J} . \mathrm{s}$ )
Official answer
(3)
2.$\displaystyle 27$ eV
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.