Class 12PhysicsDual Nature of Radiation and matterEinstein's Photoelectric Equation and Energy Quantum of Radiation
DifficultIn a photoelectric experiment,the collector plate is at $2.0\,V$ with respect to the emitter plate made of copper $(\phi = 4.5\,eV)$. The emitter is illuminated by a source of monochromatic light of wavelength $200\,nm$.
- AThe minimum kinetic energy of the photoelectrons reaching the collector is $0$.
- BThe maximum kinetic energy of the photoelectrons reaching the collector is $3.7\,eV$.
- CIf the polarity of the battery is reversed,then the answer to part $A$ will be $0$.
- DIf the polarity of the battery is reversed,then the answer to part $B$ will be $1.7\,eV$.
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