JEE Main 201912 Jan, Evening shiftPhysicsMediumDual Nature of Matter and Radiation146× since 2002
When a certain photosensitive surface is illuminated with monochromatic light of frequency v, the stopping
potential for the current is –V₀/2. When the surface is illuminated by monochromatic light of frequency v/2, the stopping potential is – V₀. The threshold frequency for photoelectric emission is :