Problem 6.34 Titanium metal requires a photon with a minimum energy of6.94×1019J

Question

Problem 6.34

Titanium metal requires a photon with a minimum energy of6.94×1019J to emit electrons.

Part A

What is the minimum frequency of light necessary to emit electrons from titanium via the photoelectric effect?

Express your answer using three significant figures.

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Significant Figures Feedback: Your answer 1.041015 = 1.04×1015 s1 was either rounded differently or used a different number of significant figures than required for this part.

Part B

What is the wavelength of this light?

Express your answer using three significant figures.

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Significant Figures Feedback: Your answer 288 nm was either rounded differently or used a different number of significant figures than required for this part.

Part C

Is it possible to eject electrons from titanium metal using visible light?

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Part D

If titanium is irradiated with light of 233 nm, what is the maximum possible kinetic energy of the emitted electrons?

Express your answer using three significant figures.

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Part E

What is the maximum number of electrons that can be freed by a a burst of light whose total energy is 2.00 J.

Express your answer using three significant figures.

Problem 6.34

Titanium metal requires a photon with a minimum energy of6.94×1019J to emit electrons.

Part A

What is the minimum frequency of light necessary to emit electrons from titanium via the photoelectric effect?

Express your answer using three significant figures.

= 1.05×1015   s1  

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Correct

Significant Figures Feedback: Your answer 1.041015 = 1.04×1015 s1 was either rounded differently or used a different number of significant figures than required for this part.

Part B

What is the wavelength of this light?

Express your answer using three significant figures.

= 286   nm  

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Correct

Significant Figures Feedback: Your answer 288 nm was either rounded differently or used a different number of significant figures than required for this part.

Part C

Is it possible to eject electrons from titanium metal using visible light?

Is it possible to eject electrons from titanium metal using visible light? Yes, it is possible. No, it is impossible.

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Part D

If titanium is irradiated with light of 233 nm, what is the maximum possible kinetic energy of the emitted electrons?

Express your answer using three significant figures.

E = 1.5891019   J  

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Part E

What is the maximum number of electrons that can be freed by a a burst of light whose total energy is 2.00 J.

Express your answer using three significant figures.

N = electrons

Explanation / Answer

the maximum number of electrons released would be the total energy divide by the work function .

N = total energy / work function (minimum energy)

N = total energy / 6.94 x 10^-19 --------------------------------> formula

note: hi friedn you cropped total enegry at right side of the question . . i gave you formula substitute in that you get answer. or give me total energy i will give you answer. its very simple

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