The intensity of a light beam with a wavelength of 500 nm is 2000 W/m². The photon flux (in number/m² . s) is about: A) 5 *10¹⁷ B) 5 * 10¹⁹ C) 5 * 10²¹ D) 5 * 10²³ E) 5 * 10²⁵

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The Answer of The intensity of a light beam with a wavelength of 500 nm is 2000 W/m². The photon flux (in number/m² . s) is about: A) 5 *10¹⁷ B) 5 * 10¹⁹ C) 5 * 10²¹ D) 5 * 10²³ E) 5 * 10²⁵

The Intensity of a Light Beam with a Wavelength of 500