Multiple Choice
What wavelength of light is required to cause the ejection of photoelectrons with kinetic energies of 5.0 *10-20 J from a calcium surface ( = 4.60 * 10-19 J) ?
A) 485 nm
B) 390 nm
C) 308 nm
D) 632 nm
E) 480 nm
Correct Answer:
Verified
Correct Answer:
Verified
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