Assume a bulb of efficiency 2.5% as a point source. The peak values of electric and…

Physics · Class 12 · CBSEElectromagnetic Waves

Assume a bulb of efficiency 2.5% as a point source. The peak values of electric and magnetic fields produced by the radiation coming from a 100 W bulb at a distance of 3 m is respectively
  1. 2.5 V m–1, 3.6 × 10–8 T
  2. 4.2 V m–1, 2.8 × 10–8 T
  3. 4.08 V m–1, 1.36 × 10–8 T
  4. 3.6 V m–1, 4.2 × 10–8 T

Answer

(C) 4.08 V m –1 , 1.36 × 10 –8 T

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