QAIPM-2015-Ph-1335: NEET 2015 Physics - Class 12 AIPM-2015-Ph-1335 Solution: A certain metallic surface is illuminated with monochromatic…

A certain metallic surface is illuminated with monochromatic light of wavelength $\lambda$. The stopping potential for photo-electric current for this light is $3V_0$. If the same surface is illuminated with light of wavelength $2\lambda$ the stopping potential is $V_0$. The threshold wavelength for this surface for photo-electric effect is $4\lambda$ $\lambda/6$ $6\lambda$ $\lambda/4$