A metal surface ejects electrons when irradiated by blue light, but not when irradiated by green light. The electrons will also be ejected by the surface, when irradiated by
A. red light
B. voilet light
C. orange light
D. yellow light
A metal surface ejects electrons when irradiated by blue light, but not when irradiated by green light. The electrons will also be ejected by the surface, when irradiated by
A. red light
B. voilet light
C. orange light
D. yellow light

Correct answer is B.