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 ?

What do you mean by crossed polaroids ?

Where do you see the pollution around you ?

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

Try this. Take a burning incense stick in your hand and rotate it fast along a circle. What do you see and why?

A uniform magnetic field of 1.5 T exists in a cylindrical region of radius 10.0 cm, its direction parallel to the axis along east to west. A wire carrying current of 7.0 A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire. If, the wire in the N - S direction is lowered from the axis by a distance of 6.0 cm ?

Observe a permanent slide of blood smear under a compound microscope. What did you see?

A uniform magnetic field of 1.5 T exists in a cylindrical region of radius 10.0 cm, its direction parallel to the axis along east to west. A wire carrying current of 7.0 A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire. If, the wire intersects the axis .

A uniform magnetic field of 1.5 T exists in a cylindrical region of radius 10.0 cm, its direction parallel to the axis along east to west. A wire carrying current of 7.0 A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire. If, the wire is turned from N - S to northeast and the northwest direction .

Take the pictures of human body and Amoeba and try to take an imaginary section through specific plane of their bodies so as to get two equal halves. What did you observe ?