A light ray enters from medium A to medium B as shown in Figure. The refractive index of medium B relative to A will be
A. Greater than unity
B. less than unity
C. Equal to unity
D. Zero
Answer:B
A light ray enters from medium A to medium B as shown in Figure. The refractive index of medium B relative to A will be
A. Greater than unity B. less than unity C. Equal to unity D. Zero