CBSE  /  Class 12  /  Physics  /  Electromagnetic Waves

  • 1. 
    Choose the wrong statement?

  • Electromagnetic waves are transverse
  • Electromagnetic waves travel with the speed of light in free space
  • Electromagnetic waves are produced by accelerating charges
  • Electromagnetic waves travel with the same speed in all media

  • 2. 
    If ue and um arc the electric and magnetic field densities in an electromagnetic wave, then (c is the speed of light):

  • ue = um
  • ue = c um
  • ue = \(\frac{u_m}{c}\)
  • None of these

  • 3. 
    Solar radiation is :

  • transverse EMW
  • longitudinal EMW
  • both (a) and (b)
  • None of these

  • 4. 
    Ampere’s circuital law was modified by:

  • Laplace
  • Gauss
  • Maxwell
  • Hertz

  • 5. 
    Light Year is the unit of:

  • distance
  • time
  • energy
  • intensity of light
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