' Question 4 (1 points) Typically, the lowest light intensity that can be reliably seen by humans after adapting to the dark is 4.00 X 1011 W/m2 at a wavelength of 500nm. If light with this intensity and wavelength enters the eye through a pupil open to its maximum diameter of 8.50 mm, how many photons per second are entering the eye? Note: while the human eye really can respond to a single photon under laboratory conditions, many more photons per second are required to be able to actually reliably see the world around you. Please enter a numerical answer below. Accepted formats are numbers or \"e" based scientic notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here photons per 5314 sec 5314photons per sece Photoelectric Effect Lab -..........................asa L'Enfant Corp Wavelength Brigthness DC Power Supply 60.0 500 nm 0.5 V 0.5 v 0.1 V # Dectrons Detected Detection Time DOs PotassiumThe photons are shown as little wave-packets traveling l- to right. The electrons that are "freed" from the metal (photoelectrons) are shown as little circles that leave the right wall. Notice that the two walls (electrodes) are connected to a voltage source that can be used to establish an electrostatic potential difference between the two walls. Notice also that although the dial shows a positive number, the collector plate (left) is at a *negative* voltage compared to the emitter plate (right). Cato. 2" I Part d (1 points) What is the energy of photons with the wavelength you found in part (0)? Give your answer in units of eV. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientic notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here 7 eV Y 7eV9 CHECK Saved ANSWER 11 of Unlimited checks used Part e (1 points) The electrons emitted at this wavelength (Part c) are just barely able to overcome a voltage difference of 0.5V to get across to the collector plate. From your answer to Part d, what must be the binding energy of electrons (the work function) for potassium metal? Give your answer as a positive number in eV. L Part e (1 Point The electrons emitted at this wavelength (Part c) are just barely able to overcome a voltage difference of 0.5V to get across to the collector plate. From your answer to Part d, what must be the binding energy of electrons (the work function) for potassium metal? Give your answer as a positive number in eV. Please enter a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8 Enter answer here eV 35er CHECK No answer ANSWER submitted