List of top Physics Questions on Photoelectric Effect asked in AP ECET Ceramic Tech

In a photoelectric experiment, the stopping potential for incident light of wavelength \(4000\ \text{\AA}\) is \(2\ \text{V}\). If the wavelength is changed to \(3000\ \text{\AA}\), the new stopping potential will be approximately \[ (\text{Use }h=4.14\times 10^{-15}\ \text{eV s},\ c=3\times 10^8\ \text{m/s}) \]

Light of wavelength \(5000\text{ \AA}\) falls on a sensitive plate with photoelectric work function of \(1.9\text{ eV}\). The kinetic energy of the emitted photoelectron will be

Light of wavelength \(5000\text{ \AA}\) falls on a sensitive plate with photoelectric work function of \(1.9\text{ eV}\). The kinetic energy of the emitted photoelectron will be