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Which of the following are applicable when explaining the photoelectric effect? Correct any statements that are wrong. (a) Light is electromagnetic radiation. (b) The intensity of a light beam is related to its frequency. (c) Light can be thought of as consisting of mass- less particles whose energy is given by Planck′s equation, E = h ν.

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Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 6, Problem 47GQ
Textbook Problem
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Which of the following are applicable when explaining the photoelectric effect? Correct any statements that are wrong.

  1. (a) Light is electromagnetic radiation.
  2. (b) The intensity of a light beam is related to its frequency.
  3. (c) Light can be thought of as consisting of mass- less particles whose energy is given by Planck′s equation, E = hν.

(a)

Interpretation Introduction

Interpretation: The correct statement regarding the explanation of photoelectric effect has to be identified.

Concept introduction:

  • Electromagnetic radiations are a type of energy surrounding us. They are of different types like radio waves, IR, UV, X-ray etc.
  • Photoelectric effect: electrons get ejected if a ray of light hits on the surface of metal when the light has adequately high frequency. Light is taken as packets that having energies and is referred as photons.

Explanation of Solution

Electromagnetic radiations are a type of energy surrounding us. They are of different types like radio waves, IR, UV, X-ray, visible light.....

(b)

Interpretation Introduction

Interpretation: The correct statement regarding the explanation of photoelectric effect is to be identified. The wrong statements are to be corrected.

Concept introduction:

  • Photoelectric effect: electrons get ejected if a ray of light hits on the surface of metal when the light has adequately high frequency. Light is taken as packets that having energies and is referred as photons. A minimum frequency is required for the light to eject the electrons called threshold frequency.

(c)

Interpretation Introduction

Interpretation: The correct statement regarding the explanation of photoelectric effect is to be identified.

Concept introduction:

  • Electromagnetic radiations are a type of energy surrounding us. They are of different types like radio waves, IR, UV, X-ray etc.
  • Photoelectric effect: electrons get ejected if a ray of light hits on the surface of metal when the light has adequately high frequency.
  • Planck’s equation,

    E=where, E=energyh=Planck'sconstantν=frequency

The energy increases as the wavelength of the light decrease. Also the energy increases as the frequency of the light increases.

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Chemistry & Chemical Reactivity
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