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1. A photon detector on the screen uses a caesium plate, which has a known stopping...

1. A photon detector on the screen uses a caesium plate, which has a known stopping potential of 0.95 V for photons of wavelength 435.8 nm. If the photon wavelength is then set to 546.1 nm, the stopping potential is measured to be 0.38 V. Using this data, determine the value of hc, which is Planck’s constant multiplied by the speed of light, to three significant figures in units eV nm.

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