Question

Light of a certain energy Shines on a metal and causes electrons to be emitted based on the research of Albert Einstein what change would most likely result in stopping of admissions of electrons for this metal

Answer 1

According to Albert Einstein's theory of photoelectric effect, metals will only emit electrons when the incident light has a frequency that is above the minimum or threshold frequency.

So if the frequency of the incident light is less than the threshold frequency then electrons will not be emitted from that metal.