Electromagnetic Waves · JEE Main previous year questions

2014 2 questions

1. Q562014 · 6 Apr 2014 · Shift 1

   During the propagation of electromagnetic waves in a medium :

   1. A.Electric energy density is double of the magnetic energy density.
   2. B.Electric energy density is half of the magnetic energy density.
   3. C.Electric energy density is equal to the magnetic energy density.
   4. D.Both electric and magnetic energy of densities are zero.
   Show answer

   Answer: C

2. Q602014 · 6 Apr 2014 · Shift 1

   Match List - 1 (Electromagnetic wave type ) with List - 2 (Its association/application) and select the correct option from the choices given below the lists: | List 1 | List 2 | | :--- | :--- | | 1. Infrared waves | (i) To treat muscular strain | | 2. Radio waves | (ii) For broadcasting | | 3. X-rays | (iii) To detect fracture of bones | | 4. Ultraviolet rays | (iv) Absorbed by the ozone layer of the atmosphere |

   1. A.$1-iv,2-iii,3-ii,4-i$
   2. B.$1-i,2-ii,3-iv,4-iii$
   3. C.$1-iii,2-ii,3-i,4-iv$
   4. D.$1-i,2-ii,3-iii,4-iv$
   Show answer

   Answer: D