The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance is E. The electric field intensity produced by the radiations coming from 50 W bulb at the same distance is

Given

Power of the bulb P �₁ = 100 W

Distance of the bulb from the point of observation = 3 m

Intensity of the radiation from bulb 1, I₁ = E

Power of the second bulb P₂ = 50 W

Explanation:

We know that, the intensity of radiation is given,

Where W is the energy emitted by the bulb, t is the time, and A is the area on which the radiation is incident. Intensity can also be expressed in terms of power P,

Therefore,

Therefore electric field intensity produced by the 50 W bulb is .