Class 12PhysicsDual Nature of Radiation and matterEinstein's Photoelectric Equation and Energy Quantum of Radiation
Difficult$A$ metal surface having work function '$W_{0}$' emits photoelectrons when photons of energy '$E$' are incident on it. The electron enters a uniform magnetic field '$B$' in a perpendicular direction and moves in a circular path of radius '$r$'. Then '$r$' is equal to (where '$m$' and '$e$' are the mass and charge of the electron,respectively).
- A$\frac{\sqrt{m(E-W_{0})}}{eB}$
- B$\frac{m(E-W_{0})}{eB}$
- C$\frac{\sqrt{2m(E-W_{0})}}{eB}$
- D$\frac{2m(E-W_{0})}{eB}$
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