Please answer the multiple choice question based on problem 20 which is attached and if you can explain why you picked the answer so I understand the reasoning. But to be clear I need an answer to the multiple choice question and not the story problem. What concept does Problem 28.20 address?HEPhoton energyPhotoelectric effectAtomic structureBlackbody radiationo000 20. A device called a photocell detects light by letting it fall onto ametal and then measuring the current from the ejected electrons.You are designing a photocell to work with visible light and areconsidering the use of either aluminum (work function = 4.3 eV)or cesium (work function = 2.1 eV). (a) Which one is a betterchoice? (b) What is the lowest photon frequency that can bedetected with your photocell? (c) Where does this frequency fallin the electromagnetic spectrum?

In the given question, light rays are falling on a metal surface and a current is obtained from the…

Answered: What concept does Problem 28.20…

Science

Physics

What concept does Problem 28.20 address? O Photon energy Photoelectric effect Atomic structure O Blackbody radiation

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter20: Static Electricity

Section: Chapter Questions

Problem 72A

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Question

Please answer the multiple choice question based on problem 20 which is attached and if you can explain why you picked the answer so I understand the reasoning. But to be clear I need an answer to the multiple choice question and not the story problem.

What concept does Problem 28.20 address?
HE
Photon energy
Photoelectric effect
Atomic structure
Blackbody radiation
o000

20. A device called a photocell detects light by letting it fall onto a
metal and then measuring the current from the ejected electrons.
You are designing a photocell to work with visible light and are
considering the use of either aluminum (work function = 4.3 eV)
or cesium (work function = 2.1 eV). (a) Which one is a better
choice? (b) What is the lowest photon frequency that can be
detected with your photocell? (c) Where does this frequency fall
in the electromagnetic spectrum?

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