Answered

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Question 5 of 10

When dim blue light shines on a piece of metal, electrons are ejected from its

surface, but not when bright red light shines on the metal. Does this

phenomenon provide evidence for the wave model or the particle model of

light? Why?

A. The particle model, because only high-energy frequencies of light

can remove electrons

O B. The wave model, because increasing the brightness causes red

light to remove electrons

C. The wave model, because only high-energy frequencies of light

can bend around a barrier

D. The particle model, because increasing the brightness causes red

light to remove electrons

Sagot :

Answer:

A. The particle model, because only high-energy frequencies of light  can remove electrons .

Explanation:

Each photon of blue light has higher energy than each photon of red light has  . So when each photon strikes each electron , it gets ejected . But the photon of red light has not sufficient energy to eject electron . Once the photon of red light strikes the electron , the energy is wasted off . Energy of photon can not be accumulated . Thus photon behaves like particle .

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