Unpolarized light passes through two polaroids, the axis of one is vertical and that of the other is `30^@` to the vertical . What is the orientation and intensity of the transmitted light ?

Unpolarised light passes through two polaroids, the axis of one is vertical and that of the other is at 45^(@) to the vertical. Then, the intensity of the transmitted light is

Unpolarised light passes through two polaroids, the axis of one is vertical and that of the other is at 45^(@) to the vertical. Then, the intensity of the transmitted light is

Unpolarized light with intensity I_0 is incident on two polaroids. The axis of the first polaroid makes an angle of 50^@ with the vertical, and the axis of the second polaroid is horizontal. What is the intensity of the light, after it has passed through the second polaroid?