Question

A series of polarizers are each placed at a 7.0° interval from the previous polarizer. Unpolarized light is incident on this series of polarizers. How many polarizers does the light have to go through before it is below 110

Answer 1

The light has to go through four polarizers before it is below 110.

Step-by-step explanation:

To determine the number of polarizers the light has to go through before it is below 110, we need to consider how each polarizer affects the intensity of the light. When unpolarized light passes through a polarizer, its intensity halves.

Given that the angle between each polarizer is 7.0°, we can calculate the number of polarizers required.

Let's assume the initial intensity of the light is 100. If each polarizer halves the intensity, after one polarizer the intensity becomes 50, after two polarizers it becomes 25, and so on. The intensity will be below 110 when the number of polarizers reaches four.