Final answer:
Unpolarized light will pass through the first polaroid with reduced intensity, but will not pass through the second polaroid as they are oriented perpendicularly.
Step-by-step explanation:
When unpolarized light approaches two polaroids that are oriented perpendicular to one another, the first polaroid will polarize the light along its axis and allow some light to pass through, decreasing its intensity to half of what was originally incident. However, when the light interacts with the second polaroid, which is oriented perpendicular to the first, no light will be transmitted because the axes of polarization are perpendicular, blocking all light from passing through.