The time taken by a photoelectron to come Out after the photon strikes is approximately
The time taken by a photoelectron to come Out after the photon strikes is approximately
- [AIEEE 2006]
- A
$10^{-4}\, s$
- B
$10^{-10}\, s$
- C
$10^{-16}$
- D
$10^{-1}\,s$
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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 radiation has an incident energy of $2.20\, eV$, which of these photosensitive surfaces may emit photoelectrons?
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- [NEET 2023]