Which colour of visible light does not show photoelectric effect?

In photoelectric effect,

What is photoelectric effect ?

What is visible light?

A particular metal used as a cathode in an experimentonphotoelectric effect does not show photoelectric effect when it is illuminated with green light. Which of the colours in the visible spectrum are likely to generate photocurrent?

Derive Einstein's equation of photoelectric effect

State the characteristics of photoelectric effect

The photoelectric effect indicates that

In photoelectric effect, photocurrent