In parallel plate capacitor arrangement having potential difference V_ B a radiation…
Physics · JEE Main · NTA Exams — Dual Nature of Matter and Radiation
In parallel plate capacitor arrangement having potential difference \(V_{B}\) a radiation falls on the positive plate. If the work function of positive plate is Φ and it was found that the speed of the most energetic photo electron just before hitting the negative plate is zero. Assume that the photoelectron is emitted perpendicular to the plate. The wavelength of radiation is
- \(\frac{h c}{e V_{B}+\Phi}\)
- \(\frac{h c}{e V_{g}-\Phi}\)
- \(\frac{\mathrm{hc}}{\mathrm{t}}\)
- \(\frac{h c}{e V_{B}}\)
Answer
(A) h c e V_ B +
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