A Beam of Light in Air Is Incident at an Angle

question 5

Multiple Choice

A beam of light in air is incident at an angle of 30 $\degree$ to the surface of a rectangular block of clear plastic (n = 1.46) .The light beam first passes through the block and re-emerges from the opposite side into air at what angle to the normal to that surface?

• A)42 \(\degree\)
• B)23 \(\degree\)
• C)30 \(\degree\)
• D)59 \(\degree\)

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A profound state of unease or dissatisfaction, often accompanied by depression, anxiety, or agitation.

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