Electrons are ejected from a metallic surface when light with a wavelength of 6250 Å is used. If light of wavelength 4500 Å is used instead,
A. there may not be any photoemission
B. the photoelectric current will increase
C. the stopping potential will increase
D. the stopping potential will decrease.
Answer:C
Electrons are ejected from a metallic surface when light with a wavelength of 6250 Å is used. If light of wavelength 4500 Å is used instead,
A. there may not be any photoemission B. the photoelectric current will increase C. the stopping potential will increase D. the stopping potential will decrease.