What are the difference between convergent, divergent, and transform?

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

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What happens when the vapor pressure of a liquid is equal to the external pressure?