Question

The intensity of a light wave is similar to what we think of as brightness. If an EM wave is emitted from a point source, the intensity of the way [ Select ] grows with the distance from the source as r^2 decreases with distance as 1/r^2 Consider light incid grows linearly with distance from the source, decreases with distance as 1/r very smooth, meani is constant, independnet of distance from the source is [ Select ] • , then most of the light is reflected at the same angle (and some passes through/is transmitted). Instead, if the surface roughness is very rough, meaning the irregularities are large [Select ] , then the light will be scattered in all directions. In this case, each point on the surface behaves like a point source, [Select]

Answer 1

the The intensity of em waves is proportional to the inverse of the square of the distance. Decreases with distance as for when the surface is regular, the reflection occurs mainly irregularity must be small in compared to the wavelength of light The third para also has the same answer compared to the wavelength of light If the inegularities are lange, diffusion occurs Emriting light in direction all