For the case of TM polarised oblique incidence:Select one:a.P = E×H is transverse to plane of incidenceb.E-field is parallel to plane of incidencec.H-field has two components which are perpendicular to plane of incidence d.E-field is transverse to the direction of wave propagation e.H-field is parallel to plane of incidence
Question
For the case of TM polarised oblique incidence:Select one:a.P = E×H is transverse to plane of incidenceb.E-field is parallel to plane of incidencec.H-field has two components which are perpendicular to plane of incidence d.E-field is transverse to the direction of wave propagation e.H-field is parallel to plane of incidence
Solution 1
For the case of TM (Transverse Magnetic) polarised oblique incidence:
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The E-field (electric field) is parallel to the plane of incidence. This is because in TM waves, the magnetic field is perpendicular to the direction of propagation, and the electric field is in the plane of incidence.
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The Poynting vector P = E × H is always in the direction of power flow, which is the direction of wave propagation. Therefore, it is not transverse to the plane of incidence.
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The H-field (magnetic field) is transverse to the direction of wave propagation, and it has only one component in the plane of incidence. Therefore, it does not have two components which are perpendicular to the plane of incidence.
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The E-field is not transverse to the direction of wave propagation. It is in the plane of incidence.
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The H-field is not parallel to the plane of incidence. It is perpendicular to the plane of incidence.
Therefore, the correct answer is b. E-field is parallel to the plane of incidence.
Solution 2
For the case of TM (Transverse Magnetic) polarised oblique incidence:
-
The E-field (electric field) is parallel to the plane of incidence. This is because in TM waves, the magnetic field is perpendicular to the direction of propagation, and the electric field is in the plane of incidence.
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The Poynting vector P = E × H is always in the direction of power flow, which is the direction of wave propagation. Therefore, it is not transverse to the plane of incidence.
-
The H-field (magnetic field) is transverse to the direction of wave propagation, and it has only one component in the plane of incidence. Therefore, it does not have two components which are perpendicular to the plane of incidence.
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The E-field is not transverse to the direction of wave propagation. It is in the plane of incidence.
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The H-field is not parallel to the plane of incidence. It is perpendicular to the plane of incidence.
Therefore, the correct answer is b. E-field is parallel to the plane of incidence.
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