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A uniform plane wave travelling in air is incident on the plane boundary between air and another dielectric medium with ∈r = 4. The reflection co-efficient for the normal incidence is—
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- 0
- 0.5 ∠180º
- 0.333 ∠0º
- 0.333 ∠180º
Correct Option: D
Reflection coefficient in terms of dielectric constant is given as
| Γ = | = | √∈r2 + √∈r1 | √4 + √1 |
| = | = | = 0.333 ∠0° | 2 + 1 | 3 |
Hence alternative (D) is the correct choice.
