If the critical angle for a glass–air boundary is 45º, what is the refractive index of the glass?
A
\(\sqrt{2}\)
B
\(\sqrt{5}\)
C
\(\sqrt{3}\)
D
2\(\sqrt{2}\)
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Answer: A
n = \(\frac{1}{\text{sinC}}\) = \(\frac{1}{sin45º}\) = \(\sqrt{2}\).
Source: WAEC / JAMB / NECO Classroom Archive (Record #74371)