A plane polarized light is incident on a polariser with its pass axis aking angle $\theta $ with x-axis, as shown in the figure. At four different values of $\theta ,\,\theta $ = 8o, 38o, 188o and 218o, the observed intensities are same. What is the angle between the direction of polarization and x-axis ?

Question

A plane polarized light is incident on a polariser with its pass axis aking angle $\theta $ with x-axis, as shown in the figure. At four different values of $\theta ,\,\theta $ = 8^o, 38^o, 188^o and 218^o, the observed intensities are same.
What is the angle between the direction of polarization and x-axis ?

98^o

128^o

203^o

45^o

Solution

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