When monochromatic light of wavelength `lambda` illuminates a metal surfrce, then stopping potential for photo electric current is `3V_(0)`. If wavelength changes to `2lambda` then stopping potential becomes `V_(0)` Threshold wavelength for photo electric emission is:

At stopping potential, the photo electric current becomes

When monochromatic light of wavelength lambda is incident on a metallic surface the stopping potential for photoelectric current is 3V_(0) when same surface is illuminated with light of waelength 2lambda the stopping potential is V_(0) The threshold wavelength for this surface when photoelectric effect takes place is

When monochromatic light of wavelength lambda is incident on a metallic surface the stopping potential for photoelectric current is 3V_(0) when same surface is illuminated with light of waelength 2lambda the stopping potential is V_(0) The threshold wavelength for this surface when photoelectric effect takes place is

When a certain metallic surface is illuminated with mono chromatic light of wavelength lambda , the stopping potential for photoelectric current is 3V_(0) . When the same surface is illuminated with light of wavelength 2lambda the stopping potential is V_(0) . The threshold wavelength for this surface for photoelectric effect is.

When a metallic surface is illuminated with monochromatic light of wavelength lambda stopping potential for photoelectric current is 3 V_(0) . When the same metal surface Illuminated with a light of wavelength 2lambda , the stopping potential is V_(0) The threshold wavelength for the surface is

When a certain metallic surface is irradiated with monochromatic light wavelength lambda , the stopping potential for photoelectric current is 3 V_(0) . When the same surface is irradiated with light of wavelength 2 lambda , the stopping potential is V_(0) The threshold wavelength for the given surface is