What will you observe if
Instead of rotating only one of the polaroid , you rotate both polaroids simultaneously in the same direction ?

What do you observe in the following Pictures?:

What will you observe when calcium is treated with water?

What will you observe if You look at an unpolarized source of light through a polarizer ?

What do you mean by crossed polaroids ?

If you look at the sky in a particular direction through a polaroid and rotate the polaroid around that direction what will you see ?

What will you observe if You look at the source through two polarizers and rotate one of them around the path of light for one full rotation ?

Answer the following questions : Take two similar pages from your notebook. Crumple one paper and allow this and the other paper to fall on the ground simultaneously. What do you observe ?

Two wheels of moment of inertia 4 kgm^2 rotate side by side of the rate of 120 r.p.m. and 240 r.p.m. respectively in the opposite direction. If now both the wheels are coupled by means of weightless shaft so that both the wheels now rotate with a common angular speed, find the new speed of rotation.