Physics · Electrodynamics
Electromagnetic waves of frequency ω are incident on an electron gas whose relaxation time is τ. Let σlow and σhigh represent the respective electrical conductivities of the gas in low frequency (ωτ ≪ 1) and high frequency (ωτ ≫ 1) limits. The ratio (σlow / σhigh) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1inversely proportional to ω2.
- 2directly proportional to ω2.✓
- 3independent of ω.
- 4directly proportional to ω.
Correct answer
directly proportional to ω2.
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