Question

Two transparent media. A and B are separated by a plane boundary. The speed of light in those media are 1.5 × 108 m/s and 2.0 × 108 m/s, respectively. The critical angle for a ray of light for these two media is:

• A. sin-1(0.5000)
• B. sin-1(0.750)
• C. tan-1(0.500)
• D. tan-1(0.750)

Answer 1

Answer: (B)

sin-1(0.750)

Answer 2

The correct answer is (B): sin-1(0.750)