An Ideal Polarizer with Its Transmission Axis Rotated $30 ^ { \circ }$

question 143

Multiple Choice

An ideal polarizer with its transmission axis rotated $30 ^ { \circ }$ to the vertical is placed in a beam of unpolarized light of intensity $10 \mathrm {~W} / \mathrm { m } ^ { 2 }$ . After passing through the polarizer, what is intensity of the beam?

• A) \(2.5 \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• B) \(8.7 \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• C) \(5.0 \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• D) \(7.5 \mathrm {~W} / \mathrm { m } ^ { 2 }\)
• E) \(10 \mathrm {~W} / \mathrm { m } ^ { 2 }\)

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