Question : A photo sensitive metal is not emitting photo-electrons when irradiated. It will do so when threshold is crossed. To cross the threshold we need to increase
A. intensity
B. frequency
C. wavelength
D. None of these
Answer:B
Question : A photo sensitive metal is not emitting photo-electrons when irradiated. It will do so when threshold is crossed. To cross the threshold we need to increase
A. intensity B. frequency C. wavelength D. None of these