4. A solution is made with 10 g of salt and 50 ml of water. What can be done to make a more concentrated solution? Select al D Use more salt in the same amount of water.
D Use less water and the same amount of salt.
Use more water and the same amount of salt.
Use less salt in the same amount of water.

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?