In a photoelectric effect experiment using UV light of wavelength 100 nm, a stopping voltage of V = 7.68 V is found. (a) Find the work function of the metal used. Using an appropriate table of work functions (in your text, for example), identify the metal. (b) Will there be a photoelectric effect using light of wavelength 200 nm? If so, find the stopping voltage. (c) Will there be a photoelectric effect using light of wavelength 400 nm? If so, find the stopping voltage.
In a photoelectric effect experiment using UV light of wavelength 100 nm, a stopping voltage of V = 7.68 V is found. (a) Find the work function of the metal used. Using an appropriate table of work functions (in your text, for example), identify the metal. (b) Will there be a photoelectric effect using light of wavelength 200 nm? If so, find the stopping voltage. (c) Will there be a photoelectric effect using light of wavelength 400 nm? If so, find the stopping voltage.
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Transcribed Image Text:In a photoelectric effect experiment using UV light of wavelength 100 nm, a
stopping voltage of V = 7.68 V is found.
(a) Find the work function of the metal used. Using an appropriate table of
work functions (in your text, for example), identify the metal.
(b) Will there be a photoelectric effect using light of wavelength 200 nm? If
so, find the stopping voltage.
(c) Will there be a photoelectric effect using light of wavelength 400 nm? If
so, find the stopping voltage.
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Step 1: Define photoelectric effect and its equation:
VIEWStep 2: (a) Calculate the work function of the metal and identify it:
VIEWStep 3: Calculate the threshold wavelength for the metal:
VIEWStep 4: (b) Find the stopping potential if the light of wavelength 200 nm shows photoelectric effect:
VIEWStep 5: (c) Find the stopping potential if the light of wavelength 400 nm shows photoelectric effect:
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