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Problem

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question

What must be the width a of a rectangular guide such that the energy of electromagnetic radiation whose free-space wavelength is 3.0cm travels down the guide (a) at 95% of the speed of light? (b) At 50% of the speed of light?

category

physics

options

  1. a = 3.5cm for 95% of the speed of light, a = 2.5cm for 50% of the speed of light
  2. a = 4.0cm for 95% of the speed of light, a = 2.0cm for 50% of the speed of light
  3. a = 3.0cm for 95% of the speed of light, a = 6.0cm for 50% of the speed of light
  4. a = 5.5cm for 95% of the speed of light, a = 2.2cm for 50% of the speed of light
  5. a = 3.8cm for 95% of the speed of light, a = 2.8cm for 50% of the speed of light
  6. a = 4.8cm for 95% of the speed of light, a = 1.7cm for 50% of the speed of light
  7. a = 4.2cm for 95% of the speed of light, a = 1.9cm for 50% of the speed of light
  8. a = 6.0cm for 95% of the speed of light, a = 3.0cm for 50% of the speed of light
  9. a = 5.0cm for 95% of the speed of light, a = 2.5cm for 50% of the speed of light
  10. a = 5.2cm for 95% of the speed of light, a = 3.5cm for 50% of the speed of light

src

stemez-Physics

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