- #1

Bloopy

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My doubt is, what factors does the slope of this line depend on? I think it depends on the nature of metal used. Correct me if I am wrong.

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In summary: The slope of the line corresponds to the rate of increase of Ek with respect to f, and the y-intercept corresponds to the point at which Ek equals hf.

- #1

Bloopy

- 13

- 1

My doubt is, what factors does the slope of this line depend on? I think it depends on the nature of metal used. Correct me if I am wrong.

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- #2

BvU

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It looks as if you know which equation that is. Can you write it up in a post ?Bloopy said:According to the equation,

- #3

- #4

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Bloopy said:I know this.

This is really not an "equation". So let's start all over again. Can you write down the Einstein's photoelectric effect

Zz.

- #5

BvU

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And what do you think of the mathematical description in the Wikipedia lemma right beside this picture ?Bloopy said:I know this.

- #6

Bloopy

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ZapperZ said:Can you write down the Einstein's photoelectric effectequation?

Energy supplied=Work Function + Kinetic Energy

- #7

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Bloopy said:Energy supplied=Work Function + Kinetic Energy

I am not quite sure why you are being a bit difficult, or if you don't quite know what you are doing.

So, if I write this:

E

where E

Zz.

- #8

Bloopy

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I am on the same page as youZapperZ said:or do you need an explanation for this?

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Bloopy said:No, I am on the same page

Not sure what page you're on, but OK.

Now, I will make the assumption that you know the mathematics for the equation of a straight line, i.e.

y = mx + b

so, I will not explain the meaning of that equation (this is the math that you should already know by the time you tackle this physics).

The graph you referred to in your original post is a graph of E

y = mx + b

E

If you identify

y→E

and

x→f

then what corresponds to the slope of the line? As a bonus, what corresponds to the y-intercept of the line?

Zz.

Last edited:

Einstein's Photoelectric Equation demonstrated that light behaves as both a wave and a particle. This challenged the previously accepted theory that light only behaved as a wave.

The Photoelectric Effect is the phenomenon where electrons are emitted from a metal surface when light of a certain frequency is shone on it. Einstein's Equation explains this effect by showing that light energy is absorbed by individual electrons, causing them to be emitted from the metal surface.

The Photoelectric Equation graph shows the relationship between the frequency of light and the kinetic energy of emitted electrons. The slope of the graph represents Planck's constant, while the y-intercept represents the work function of the metal surface.

No, the Photoelectric Equation can only be applied to certain metals that have a low work function. Metals with higher work functions require a higher frequency of light to cause the emission of electrons.

The Photoelectric Equation has led to the development of important technologies such as solar panels, photodiodes, and photomultiplier tubes. These technologies rely on the Photoelectric Effect to convert light energy into electrical energy.

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