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MMLU-Pro / 11768 / A 1-Mc/sec (300 meters wavelength) plane wave traveling in a normally…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A 1-Mc/sec (300 meters wavelength) plane wave traveling in a normally dispersive, lossless medium has a phase velocity at this frequency of 3 × 10^8 meters/sec. The phase velocity as a function of wavelength is given by v =k\surd\lambda where k = constant. Find the group velocity.

category

engineering

options

  1. 3.5 × 10^8 meters/sec
  2. 2.25 × 10^8 meters/sec
  3. 2 × 10^8 meters/sec
  4. 3 × 10^8 meters/sec
  5. 0.5 × 10^8 meters/sec
  6. 4 × 10^8 meters/sec
  7. 0.75 × 10^8 meters/sec
  8. 1.5 × 10^8 meters/sec
  9. 2.5 × 10^8 meters/sec
  10. 1 × 10^8 meters/sec

src

stemez-Electromagnetics

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Source and history

upstream_id / Original problem ID
11768
task_id
dac29148-a3ce-58df-886b-f8f5074d3f4d
task_key
default--test--11768
task_revision_id
1
config / split
default / test

Official source

initial import