If a photocell is illuminated with a radiation of `1240 A`, then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are

When radiation of wavelength lambda is incident on a metallic surface , the stopping potential is 4.8 "volts" . If the same surface is illuminated with radiation of double the wavelength , then the stopping potential becomes 1.6 "volts" . Then the threshold wavelength for the surface is

When a metallic surface is illuminated with radiation of wavelength lambda , the stopping potential is V . If the same surface is illuminated with radiation of wavelength 2 lambda , the stopping potential is (V)/(4) . The threshold wavelength surface is :

When a metallic surface is illuminated with radiation of wavelength lambda , the stopping potentials is V. If the same surface is illuminated with radiation of wavelength 2 lambda , the stopping potential is ( V )/( 4) . The threshold wavelength for the metallic surface is

When a metallic surface is illuminated with radiation of wavelength lamda , the stopping potential is V . If the same surface is illuminated with radiation of wavelength 2lamda , the stopping potential is V/4 . The threshold wavelength for the metallic surface is