Question

Electrons are ejected from a metallic surface when incident light quanta have been certain minimum A) Wavelength B) Energy C) Amplitude D)Number of photons​

Answer 1

Explanation:

I DON'T KNOW

VERY VERY SORRRRRRY.....

Answer 2

Electrons are ejected from a metallic surface when incident light quanta have been a certain minimum wavelength which is 683 nm.

Explanation:

The energy produced by the above wavelength is 1.82 eV. This minimum energy through which an electron can be excited through the kinetic energy is called photoelectric works function.

When  a light wave is fallen to a surface of a metal, it;s electron excited to higher energy state and this phenomenon is called photoelectric effect.