The essential condition for total internal reflection to occur is: |
angle of incidence $i$ > critical angle $i_c$ angle of incidence $i$ < critical angle $i_c$ angle of incidence $i$ = critical angle $i_c$ angle of incidence $i=90°$ |
angle of incidence $i$ > critical angle $i_c$ |
The correct answer is Option (1) → angle of incidence $i$ > critical angle $i_c$ |