In the diagram above, a ray of light passes from glass into air, if the angle of incidence in glass is a and angle of refraction in air is β. which of following statements is true???
B. the efractive index of glass is sinθ/sinα
C. The ray suffers total internal reflection if β is greater than the critical angle
D. the efractive index of glass is sinα/sinβ
Correct Answer: Option D
The formula for refractive index=sin i/sin r (where i= angle of incidence and r= angle of refraction)
Look at the diagram carefully and observe the arrow! The angle of incidence of the glass is α and the angle of refraction is β and you substitute in the values
therefore refractive index = sin α/sin β
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His Name is Tiamiyu Abdulbazeet Olawale. He is a student at the University of Ilorin studying Electrical and Electronics Engineering. He likes to give the latest updates about Nigeria and international institutions as he aims at helping people to lay their hands on the right information.