Rankers Physics
Topic: Modern Physics
Subtopic: Photoelectric Effects and deBroglie Equation

Ultraviolet light of wavelength 300 nm and intensity 1.0 watt/m² falls on the surface of a photosensitive material. If 1% of the incident photons produce photoelectrons, then the number of photoelectrons emitted from an area of 1.0 cm² of the surface is nearly
\[9.61\times 10^{14}per sec\]
\[4.12\times 10^{13}per sec\]
\[1.51\times 10^{12}per sec\]
\[2.13\times 10^{11}per sec\]

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