When a piece of metal is illuminated by a monochromatic light of wavelength `lambda`, then stopping potential is `3V_s`. When the same surface is illuminated by the light of wavelength `2 lambda`, then stopping potential becomes `V_s`. The value of threshold wavelength for photoelectric emission will be

When a piece of metal is illuminated by monochromatic light of wavelength lambda, then stopping potential is 3V_(s) . When the same surface is illuminated by the light of wavelength 2lambda , then stopping potential becomes V_(s) . The value of threshold wavelength for photoelectric emission will be

When a piece of metal is illuminated by monochromatic light of wavelength lambda, then stopping potential is 3V_(s) . When the same surface is illuminated by the light of wavelength 2lambda , then stopping potential becomes V_(s) . The value of threshold wavelength for photoelectric emission will be

When a piece of metal is illuminated by a monochromatics light of wavelength gamma then stopping potential is 3V_(s) . When same surface is illuminated by light of wavelength 2gamma , then stopping potential becomes V_(s) . The value of threshold wavelength for photoelectric emission will be

When a piece of metal is illuminated by monochromatic light of wavelength lambda then the stopping potential for photoelectric current is 2.5 V_0 . When the same surface is illuminated by light of wavelength 1.5 lambda , then the stopping potential becomes V_0 . Find the value of threshold wavelength for photoelctric emission.

When a piece of metal is illuminated by monochromatic light of wavelength lamda , the stopping potential for photoelectric current is 2.5V_(0) . If the same surface is illuminated by light of wavelength 1.5 lamda , the stopping potential becomes V_(0) . Find the out the value of threshold wavelength for photoelectric emission.

When a centimetre thick surfaces is illuminated with light of wavelength lambda , the stopping potential is V . When the same surface is illuminated by light of wavelength 2lambda , the stopping potential is V//3 . The threshold wavelength for the surface is:

When a metallic surface is illuminated with monochromatic light of wavelength lambda , the stopping potential is 5 V_0 . When the same surface is illuminated with light of wavelength 3lambda , the stopping potential is V_0 . Then the work function of the metallic surface is: