Electromagnetic Spectrum and Light

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the relationship between the wavelength and frequency of electromagnetic waves?

  • The wavelength is proportional to the square of the frequency
  • The wavelength is inversely proportional to the square of the frequency
  • The wavelength is directly proportional to the frequency
  • The wavelength is inversely proportional to the frequency (correct)

What is the range of wavelengths of visible light in centimeters?

  • 0.00001 to 0.0001 cm
  • 0.001 to 0.01 cm
  • 0.00004 to 0.00007 cm (correct)
  • 0.0001 to 0.001 cm

What is the name of the phenomenon where light bends when entering a transparent medium?

  • Total Internal Reflection
  • Rectilinear Propagation
  • Refraction (correct)
  • Reflection

What happens to light when it passes at an angle from a medium of higher index to one of lower index?

<p>It is reflected internally at the maximum angle (D)</p> Signup and view all the answers

Why does yellow light appear brighter to the eye than red light?

<p>Because the human eye is more sensitive to yellow light (B)</p> Signup and view all the answers

What is the speed of light in meters per second?

<p>3.00 x 10^8 m/s (B)</p> Signup and view all the answers

What is the orientation of the electric and magnetic fields with respect to the direction of wave propagation in an EM wave?

<p>Perpendicular to each other and to the direction of wave propagation (A)</p> Signup and view all the answers

What is the condition for total internal reflection?

<p>The angle of incidence is greater than the critical angle (D)</p> Signup and view all the answers

What is the speed of EM waves in a vacuum?

<p>3.00x10^8 m/s (C)</p> Signup and view all the answers

What is exhibited by EM waves?

<p>Reflection, refraction, diffraction, and interference (C)</p> Signup and view all the answers

Who predicted the existence of EM waves in 1862?

<p>James Clerk Maxwell (C)</p> Signup and view all the answers

What is the speed of an electromagnetic wave through a vacuum?

<p>3.00 x 10^8 m/s (C)</p> Signup and view all the answers

What determines the actual speed of an electromagnetic wave through a material medium?

<p>The optical density of the medium (A)</p> Signup and view all the answers

What is the term for the ability of an object to slow or delay the transmission of light?

<p>Optical density (A)</p> Signup and view all the answers

Which medium has the highest speed of light?

<p>Air (D)</p> Signup and view all the answers

What is the term for a medium in which the speed of light is less?

<p>Optically denser medium (C)</p> Signup and view all the answers

What is the relationship between the speed of light and the optical density of a medium?

<p>The speed of light decreases with increasing optical density (A)</p> Signup and view all the answers

Flashcards are hidden until you start studying

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser