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Electronic Devices question

2015 · Shift 0 · Q44
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Electronic Devices question

2015 · Shift 0 · Q44

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
A red LEDLEDLED emits light at 0.10.10.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1m1m1m from the diode is :
  1. A
    5.48V/m5.48V/m5.48V/m
  2. B
    7.75V/m7.75V/m7.75V/m
  3. C
    1.73V/m1.73V/m1.73V/m
  4. D
    2.45V/m2.45V/m2.45V/m
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