Use the paragraph to answer the question.
The photoelectric effect happens when light waves are absorbed by a surface and electrons are emitted. Scientists once thought that the energy of those electrons was
proportional to the intensity of the light. However, experiments showed that the maximum energy of the electrons did not depend on the intensity of the light. Instead, the
energy increased as the frequency of the light increased. Below a certain frequency, the effect did not occur.
What can be inferred from the paragraph?
(1 point)
A)The maximum energy of electrons does not depend on light intensity.
B)The absorption of light causes electrons to gain energy.
C)Energy increases as frequency of light increases.
D)Electrons are released when light hits a surface.

Question

aestheticeverglowsta aestheticeverglowsta

16-08-2022
Physics

Answered

Use the paragraph to answer the question.
The photoelectric effect happens when light waves are absorbed by a surface and electrons are emitted. Scientists once thought that the energy of those electrons was
proportional to the intensity of the light. However, experiments showed that the maximum energy of the electrons did not depend on the intensity of the light. Instead, the
energy increased as the frequency of the light increased. Below a certain frequency, the effect did not occur.
What can be inferred from the paragraph?
(1 point)
A)The maximum energy of electrons does not depend on light intensity.
B)The absorption of light causes electrons to gain energy.
C)Energy increases as frequency of light increases.
D)Electrons are released when light hits a surface.

Answer :

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By reading this paragraph we can say that option(A)The maximum energy of electrons does not depend on light intensity is correct.

The light beam in the photoelectric effect is composed of photons, each of which has the same amount of energy.

A photon can only emit one electron, and the frequency of the photon determines the electron's kinetic energy.

The intensity of the light only determines the number of photons, not their frequency. Thus, intensity determines the number of electrons released but not their energy.

When electromagnetic radiation, such as light, strikes a material, electrons are emitted. Photoelectrons are electrons that are emitted in this manner. The effect has found application in electronic devices specialized in light detection and precisely timed electron emission.

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