intensity of sunlight near the surface ofEarth is 1200 `W//m^2` . Find the amplitude of electric field assuming it to be a plane electromagnetic wave .

Explanation

To find the amplitude of the electric field (E_m) of sunlight near the surface of the Earth, we can use the relationship between intensity (I) and the electric field amplitude in electromagnetic waves.

### Step-by-Step Solution:

1. **Understanding the relationship between intensity and electric field amplitude:**
The intensity (I) of an electromagnetic wave is given by the formula:
\[
I = \frac{E_m^2}{2 \mu_0 c}
...