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The electric field of a uniform plane wave travelling along the negative z direction is given by the following equation: 𝐸�⃗ 𝑤 𝑖 = �𝑎�𝑥 + 𝑗𝑎�𝑦�𝐸0𝑒𝑗𝑘𝑧 This wave is incident upon a receiving antenna pl1 AnswerConsider a uniform plane wave with amplitude E of 10V / m and 1.1GHz frequency travelling in air, and incident normally on a dielectric medium with complex relative permittivity and permeability as shown in the figure.GATE EC 20151 AnswerThe electric field of a uniform plane electromagnetic wave is -GATE EC 20151 AnswerA quarter wave plate introduces a path difference of 𝜆/4 between the two components of polarization parallel and perpendicular to the optic axis. An electromagnetic wave with 𝐸⃗ =(𝑥̂+𝑦̂) 𝐸0 𝑒𝑖(𝑘𝑧−𝜔𝑡) is incident normally on a quarter wave plate which has its optic axis making an angle 135° with the 𝑥-axis as shown.0 AnswerA quarter wave plate introduces a path difference of 𝜆/4 between the two components of polarization parallel and perpendicular to the optic axis. An electromagnetic wave with 𝐸⃗ =(𝑥̂+𝑦̂) 𝐸0 𝑒𝑖(𝑘𝑧−𝜔𝑡) is incident normally on a quarter wave plate which has its optic axis making an angle 135° with the 𝑥-axis as shown.0 AnswerThe electric field intensity of a plane wave traveling in free space is give by the following expression -GATE EC 20151 AnswerA plane electromagnetic (EM) wave travelling vertically downwards with a frequency of 1000 Hz in a homogeneous medium has a skin depth of 100 m. The ratio of the amplitude of the EM wave at a depth of 75 m with respect to the amplitude at the Earth’s surface is ___________.0 AnswerAn electromagnetic plane wave is propagating with an intensity 𝐼=1.0×105 Wm–2 in a medium with 𝜖=3𝜖0 and 𝜇=𝜇0. The amplitude of the electric field inside the medium is ________ ×103 Vm–1 (up to one decimal place). (𝜖0= 8.85×10−12 C2 N–1 m–2, 𝜇0=4𝜋×10−7NA–2, 𝑐 = 3×108 ms–1)0 AnswerFor an electrostatic field, the Maxwell’s equations reduce to: (-Gate geology and geophysics 2014)1 AnswerA wave progresses up an estuary of decreasing water depth. If friction is neglected, then0 AnswerA horizontally travelling surface wave with a wavelength of 20 m is attenuated by a linear and uniform receiver array consisting of 4 receivers if the minimum receiver spacing is ________ m.0 AnswerIdentify the CORRECT sequence of the electromagnetic waves in their increasing frequency -gate Geology & Geophysics 2017 1 AnswerA square coil of 10 cm side and with 100 turns is rotated at a uniform speed of 1000 rpm about an axis at right angles to a uniform field having a flux density of 0.5 T. Calculate the instantaneous value of induced emf when the plane of the coil is (a) at to the field, and (b) in the plane of the field. 1 AnswerAn oblique shock wave with a wave angle β is generated from a wedge angle of θ GATE-Aerospace Engineering-Question-20121 AnswerT he distance (in meters) a wave has to propagate in a medium having a skin depth of 0.1 m so that the amplitude of the wave attenuates by 20 dB, is0 AnswerAn abrupt pn junction (located at x = 0) is uniformly doped on both p and n sides. The width of the depletion region is W and the electric field variation in the x-direction is E(x). Which of the following figures represents the electric field profile near the pn junction?1 AnswerIn what orientation is an electric dipole placed in a uniform electric field in stable equilibrium ? (Physics CBSE 2018)0 AnswerThe electric and magnetic fields for a TEM wave of frequency 14 GHz -gate-ece-20111 AnswerObtain the normal form of equation of the plane 3x+2y+6z+1 = 0 and find the direction cosine and length of the perpendicular from the origin to this plane0 AnswerT he P-wave velocity and the Poisson’s ratio for a homogeneous and isotropic sedimentary rock are 2500 m/s and 0.3, respectively. The S-wave velocity for the rock is ________m/s.0 Answer
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