An Optical Fiber with an Index of Refraction of 1 $\circ$

question 50

Multiple Choice

An optical fiber with an index of refraction of 1.5 is used to transport light of wavelength 400 nm.What is the critical angle for light to transport through this fiber without loss if the fiber is immersed in water?

• A)30 \(\circ\)
• B)40 \(\circ\)
• C)50 \(\circ\)
• D)60 \(\circ\)
• E)70 \(\circ\)

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