engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Dual Nature: Photon and Matter Waves The Photoelectric Effect
When a certain photosensitive surface is illuminated with monochromatic light of frequency v, the stopping potential for the photocurrent is \( - \frac{{{V_0}}}{2}.\) When the surface is illuminated by monochromatic light of frequency \(\frac{v}{2},\;\)the stopping potential is -V0. The threshold frequency for photoelectric emission is
1
\(\frac{4}{3}{\rm{v}}\)
2
2v
3
\({\rm{\;}}\frac{{3{\rm{v}}}}{2}\)
4
\({\rm{\;}}\frac{{5{\rm{v}}}}{3}\)