Electromagnetic Waves PYQs Set 9 (PDF)

Set 9 of 9 · Questions 241-244 of 244

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Mere Teacher · Previous Year Questions NEET Physics · Electromagnetic Waves · Set 9 (Q241-244)
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241. $A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic field is given by B = 5 \times 1 0^{-8} j^T. The corresponding electric field E is (Speed of light c = 3 \times 1 0^{8} m s^{-1})$ (1) $1.66 \times 1 0^{-16} i^V/m$ (2) $15 i^V / m$ (3) $-15 i^V / m$ (4) $-1.66 \times 1 0^{-16} i^V / m$ 242. $Electromagnetic tadiation used 10 sterilise milk is$ (1) $X-ray$ (2) $Y-ray$ (3) $UV rays$ (4) $Radiowaves$ 243. $A plane electromagnetic wave propagating along y -direction can have the following pair of electric field (E) and magnetic field (B) components.$ (1) $E_{y}, B_{y} or E_{z}, B_{z}$ (2) $E_{y}, B_{x} or E_{x}, B_{y}$ (3) $E_{x}, B_{z} or E_{z}, B_{x}$ (4) $E_{x}, B_{y} or E_{y}, B_{x}$ 244. $Match List I with List II List-I A. Gauss’s law of magnetostatics B. Faraday’s law of electro magnetic induction C. Ampere’s law D. Gauss’s law of electrostatics List-II I . \oint E \cdot da = \frac{I}{ϵ _{0}} \int ρ dV II. \oint B \cdot da = - 0 III. \oint E \cdot dl = \frac{- d}{dt} \int B \cdot da IV \oint B \cdot d l = - μ_{0} I Choose the correct answer from the options given below:$ (1) $A-I, B-III, C-IV, D-II$ (2) $A-III, B-IV, C-I, D-II$ (3) $A-IV, B-II, C-III, D-I$ (4) $A-II, B-III, C-IV, D-I$