Two polaroids are kept initially with their axes parallel to each other. One of the palaroid is then rotated through various angles. How would the intensity of light coming from the rotating polaroid be affected, compared to initial intensity if it is ratated through
`(i) 45^@ (ii) 90^@ (iii) 180^@`.

Explanation

To solve the problem of how the intensity of light changes when one of the polaroids is rotated through various angles, we will use Malus's Law. According to Malus's Law, the intensity of light passing through a polarizer is given by:

\[ I = I_0 \cos^2 \theta \]

where:
- \( I \) is the transmitted intensity,
- \( I_0 \) is the initial intensity of light incident on the polaroid,
- \( \theta \) is the angle between the light's polarization direction and the axis of the polaroid.
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