Question

Problem 6.34

Titanium metal requires a photon with a minimum energy of6.94×10−19J 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.

ν =

1.05×1015

s−1

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Significant Figures Feedback: Your answer 1.04⋠1015 = 1.04×10¹⁵ s−1 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.

λ =

286

nm

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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?

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 =

1.589⋠10−19

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 μJ.

Express your answer using three significant figures.

N =

electrons