question_answer

A beam of plane polarised light falls normally on a polariser (cross - sectional area \[3\times {{10}^{-4}}{{m}^{2}}\]) which rotates about the axis of the ray with an angular velocity of 31.4 rad/s. Fin the energy of light (in joule) passing through the polariser per revolution if flux of energy of the incident ray is \[{{10}^{-3}}W.\]

Answer:

\[({{10}^{-4}})\]