According to classical physics, which of the following should determine the velocity of the photo electrons ejected from a metallic surface?

Explanation:

When the electrons are ejected from metal surface, the electrons have some kinetic energy if the incident energy is more than the work function of the metal.

The minimum amount of energy which is required to just eject the electrons from the metal surface is called work function. It is denoted by Wo.

The energy incident is E.

So, the maximum kinetic energy k is given by

E = Wo + K

K = E - Wo

Kinetic energy is

K = 0.5 mv²

where, m is the mass of electron, so from the above equation we get the value of velocity of electrons.

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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