A circuit employs a silicon solar cell to detect flashes of light lasting 0.25 ss. The smallest current the circuit can detect reliably is 0.37 μA . Assuming that all photons reaching the solar cell give their energy to a charge carrier, what is the minimum power of a flash of light of wavelength 560 nmnm that can be detected? Express your answer with the appropriate units.

A circuit employs a silicon solar cell to detect flashes of light lasting 0.25 ss. The smallest current the circuit can detect reliably is 0.37 μA . Assuming that all photons reaching the solar cell give their energy to a charge carrier, what is the minimum power of a flash of light of wavelength 560 nmnm that can be detected? Express your answer with the appropriate units.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter6: Photons And Matter Waves

Section: Chapter Questions

Problem 80P: What is the wavelength of (a) a 12-keV X-ray photon; (b) a 2.O-MeV y -ray photon?

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