Zero Reflection For P-Polarised Wave and Brewster Angle MCQ Quiz in বাংলা - Objective Question with Answer for Zero Reflection For P-Polarised Wave and Brewster Angle - বিনামূল্যে ডাউনলোড করুন [PDF]
Last updated on Mar 26, 2025
Latest Zero Reflection For P-Polarised Wave and Brewster Angle MCQ Objective Questions
Top Zero Reflection For P-Polarised Wave and Brewster Angle MCQ Objective Questions
Zero Reflection For P-Polarised Wave and Brewster Angle Question 1:
A uniform plane wave travelling from a medium with (ϵr = 2) is incident on a medium obliquely as shown in below figure,
E = (3âx – 4âz) cos [2π × 107t – 7(3z + 4x)] V/m
If the entire incident power is absorbed by the medium (2) then the relative permittivity of medium (2) is _______.
Answer (Detailed Solution Below) 3.3 - 3.7
Zero Reflection For P-Polarised Wave and Brewster Angle Question 1 Detailed Solution
Entire incident power is absorbed, hence there is no reflected wave.
⇒ Incident angle is Brewster’s angle.
From the given E-field we can deduce that wave is traveling x-z plane with vector along wave transfer is 4âx + 3âz.
The angle it makes with normal to plane of incident i.e. âz is
Brewster angle be,
≃ 3.55
Zero Reflection For P-Polarised Wave and Brewster Angle Question 2:
A plane wave is obliquely incident on a lossless dielectric (with its E-field parallel to plane of incidence) of an angle θ such that entire wave energy is transmitted, θ is ________ (in degrees) given ϵr = 2.5
Answer (Detailed Solution Below) 57.6 - 57.8
Zero Reflection For P-Polarised Wave and Brewster Angle Question 2 Detailed Solution
The angle of incidence of plane wave on a dielectric material such that entire wave is transmitted is called Brewster angle θb
≃ 57.7
Zero Reflection For P-Polarised Wave and Brewster Angle Question 3:
A right circularly polarized (RCP) plane wave in a dielectric of relative permittivity
Answer (Detailed Solution Below)
Linear, Elliptical
Zero Reflection For P-Polarised Wave and Brewster Angle Question 3 Detailed Solution
The RCP wave can be represented as the vector sum of s–polarized and p-polarized component. Now, we see for our case of incident angle 30°,
Thus,
⇒ p-polarized wave will have zero reflection and complete transmission.
⇒ reflected wave will have only one component
⇒ reflected wave will be linearly polarized
Now, for s–polarized and p-polarized waves
Reflection coefficient,
⇒ Transmission coefficients are not equal.
⇒ The transmitted s-polarized and p-polarized electric field phasor will have different amplitudes upon transmission and will be out of phase by
⇒ Transmitted wave is elliptically polarized.