Dual Nature of Radiation and Matter

Question: When radiation is incident on a photoelectron emitter, the stopping potential is found to be 9 volts. If $e/m$ for the electron is $1.8 \times {10^{11}}\,C\,k{g^{ - 1}}$ the maximum velocity of the ejected electrons is



1) $6 \times {10^5}\,m{s^{ - 1}}$
2) $8 \times {10^5}\,m{s^{ - 1}}$
3) $1.8 \times {10^6}\,m{s^{ - 1}}$
4) $1.8 \times {10^5}\,m{s^{ - 1}}$
Solution: Explanation: No Explanation
Photon and Photoelectric Effect

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