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Electromagnetic Waves

JEE Main 2024 (Online) 29th January Morning ShiftMatchingEasy📈 Topic in 21% papers+4−1
Ques. 1JEE Main 2024, 29 January (Morning Shift)

Match List I with List II Choose the correct answer from the options given below:

  1. A-IV, B-III, C-I, D-II
  2. A-I, B-II, C-III, D-IV
  3. A-IV, B-I, C-III, D-II
  4. A-II, B-III, C-I, D-IV

Answer

(1) A-IV, B-III, C-I, D-II

Solution

(A): line integral of B = 0(conduction + displacement current) ⇒ (A) is Ampere–Maxwell law (IV)

(B): line integral of E = rate of change of magnetic flux ⇒ (B) is Faraday law (III)

(C): flux of E through a closed surface = Q 0 ⇒ (C) is Gauss' law for electricity (I)

(D): flux of B through a closed surface = 0 (no magnetic monopole) ⇒ (D) is Gauss' law for magnetism (II)

Answer: (1)

Keep practising — Electromagnetic Waves

Ques. 2JEE Main 2024, 29 January (Evening Shift)

A plane electromagnetic wave of frequency 35 MHz travels in free space along the X-direction. At a particular point (in space and time) E=9.6 j V/m. The value of magnetic field at this point is :

  1. 9.6 j T
  2. 3.2 10-8 i T
  3. 9.6 10-8 k T
  4. 3.2 10-8 k T
Ques. 3JEE Main 2024, 27 January (Morning Shift)

A plane electromagnetic wave propagating in x-direction is described by Ey = (200 V m-1 ) [1.5 107 t - 0.05x ]; The intensity of the wave is : (Use 0 = 8.85 10-12 C2 N-1 m-2)

  1. 35.4 W m-2
  2. 53.1 W m-2
  3. 26.6 W m-2
  4. 106.2 W m-2
Ques. 4JEE Main 2024, 27 January (Evening Shift)

An object is placed in a medium of refractive index 3 . An electromagnetic wave of intensity 6 108 W/m2 falls normally on the object and it is absorbed completely. The radiation pressure on the object would be (speed of light in free space =3 108 m/s ) :

  1. 6 Nm-2
  2. 36 Nm-2
  3. 18 Nm-2
  4. 2 Nm-2

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