Question

Based on the research of Albert Einstein, what change would most likely result in stopping the emission of electrons from this metal? a) an increase in the intensity of the light b) a decrease in the intensity of the light c) the use of light that has a higher frequency d) the use of light that has a lower frequency.

Answer 1

the use of light that has a lower frequency

Step-by-step explanation:

Answer 2

option (d)

Step-by-step explanation:

In the experiment of photo electric emission, it starts only when the incident energy has some minimum frequency so that the electrons just emits from the cathode surface. Such frequency is called threshold frequency.

So, if we use light of frequency lower than the threshold frequency, no photo electric emission takes place.

Thus, option (d) is correct.