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Wave Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
MCQ
Electromagnetic waves travel in a medium which has relative permeability $1.3$ and relative permittivity $2.14.$ Then the speed of the electromagnetic wave in the medium will be
  • A
    $13.6 \times 10^6 \mathrm{~m} / \mathrm{s}$
  • B
    $1.8 \times 10^2 \mathrm{~m} / \mathrm{s}$
  • C
    $3.6 \times 10^8 \mathrm{~m} / \mathrm{s}$
  • ✓
    $1.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
✓

Answer

Correct option: D.
$1.8 \times 10^8 \mathrm{~m} / \mathrm{s}$
$1.8 \times 10^8 \mathrm{~m} / \mathrm{s}$

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