A light has amplitude \( A \) and angle between analyser \( \mathrm{P} \) and polariser is \( 60...

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A light has amplitude \( A \) and angle between analyser
\( \mathrm{P} \) and polariser is \( 60^{\circ} \). Light is transmitted by analyser

W has amplitude.
(1) \( A \sqrt{2} \)
(2) \( \frac{A}{\sqrt{2}} \)
(3) \( \frac{\sqrt{3} A}{2} \)
(4) \( \frac{A}{2 \sqrt{2}} \)
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