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.

BuyFind

Chemistry & Chemical Reactivity

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

Chemistry & Chemical Reactivity

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

Solutions

Chapter 6, Problem 47GQ

(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.

(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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