question_answer

In a photocell bichromatic light of wavelength \[2475\text{ }\overset{o}{\mathop{A}}\,\]and \[6000\overset{o}{\mathop{A}}\,\] are incident on cathode whose work function is\[4.8\text{ }eV\]. If a uniform magnetic field of \[3\times {{10}^{-5}}\] tesla exists parallel to the plate, the radius (in cm) of the path described by the photoelectron is (mass of electron\[=9\times {{10}^{-31}}kg\])

Answer:

5