Which One of the Following Expressions Determines the Critical Angle

question 42

Multiple Choice

Which one of the following expressions determines the critical angle for quartz (n = 1.5) immersed in oil (n = 1.1) ?

• A) = 1.5/1.1
• B)= sin-¹ (1.1/1.5)
• C) = sin (1.1/1.5)
• D) = tan-¹ (1.1/1.5)

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