These are questions from a lab I am working on. The first 3 questions ask to cit

Question

These are questions from a lab I am working on. The first 3 questions ask to cite observations, but I am only struggling with the concepts of the questions, so only focus on those.

Experiment 10.1 Questions 1. When a single filter polarizes unpolarized light, what visible effect does this have? (Cite your observations.) Why does the polarization process cause this? 2. If you look through a polarizing filter, the light it transmits to your eye is al matter what kind of light goes in the other side. So what test can you perform to determine whether the light going into a filter is polarized or unpolarized? Explain, using examples from your observations. look through a polarizing filter, the light it transmits to your eye is always polarized, no 3. What do your observations in part C tell you about reflected light? Explain. 4. Why would you guess that some sunglasses have polarizing filters as lenses? ("Unpolarized" sunglasses simply have darkened transparent lenses.)

Explanation / Answer

(1) Actually polarizer allow only some of the part of the light to pass through it.
An unpolarized light has disturbances or vibration in all directions.
these vibrations are of electric and magnetic field as we know that light is electromagnetic wave and made up of
disturbances of these field.
So polarizer allow only some of the disturbances to pass through it and stop part of the disturbances.
Due to this the visible effect which we notice is the intensity of the light that will exit from the polarizer
will be less.
(2) To confirm the light is polarized or not , we have to use another polarizer which we called analyser.
When we rotate this analyser we will notice that the intensity of the light is changing and at one moment
we do not get any light from the analyser. This will confirm that light is polarized.
And when the axis of the analyser become perpendicular to the polarized light then we do not get any light beyond the analyser.
Now what will happen if light was unpolarized.
if light was unpolarized then on the rotation of analyser the intensity of the light will not vary.
Because unpolarized light has disturbances in all directions therefore on rotation of the analser same amount of disturbances will kept on passing throught it.
Hence we will not get any moment when there will be no light beyond the polarizer.
This is the basic concept of the polarization. I hope this will help you out in your lab.

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