Question 12(Multiple Choice Worth 2 points) The photoelectric effect describes when light shines on a piece of metal, and the metal releases electrons. Which model of light behavior best helps explain this effect? Particle model Wave model Electromagnetic model Frequency model

A. Particle model.

Explanation:

The photoelectric effect describes when light shines on a piece of metal, and the metal releases electrons. The model of light behavior which best helps to explain this effect is the particle model. According to Isaac Newton, he postulated that light consists of little (tiny) particles which typically travels in a straight line and from his experimental investigation he observed that white light comprises of a mixture of colors.

Sir Newton observed that, when light shines on a piece of metal, the metal releases electrons because the energy of the tiny light particles are greater than the binding energy of the electrons residing in the metal. This theory is known as the particle model of light.

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