A red LED emits light of 0.1 watt uniformaly around it. The amplitude of the electric field of the light at a distance of 1m from the diode is

A red LED emits light a 0.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1 m from the diode is

A Red LED emits light 0.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1 m from the diode is :

A redc LED emits light at 0.1 wall uniformily around it . The amplitude of the electric field of the light at a distnce of 3m from the diode is

The amplitude of electric field in a parallel light beam of intensity 4Wm^(-2) is

There is one small bulb of 500 watt .Assume its effiency to be 20 % caculate amplitude of electric field produced by it a distance of 1 m from the bulb .