A monochromatic light beam is incident on a barium target, which has a work function of 2.6 eV. If a stopping potential of 1.2 V is required, what is the light beam photon energy?
a. 2.6 eV
b. 1.4 eV
c. 1.2 eV
d. 3.8 eV
e. 0.7
d
Physics & Space Science
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Fill in the blank(s) with correct word
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