For a light ray to undergo total internal reflection, light must travel from ($i$ = angle of incidence…
For a light ray to undergo total internal reflection, light must travel from ($i$ = angle of incidence,$i_C=$ critical angle)
rarer to denser medium and $i < i_c$
denser to rarer medium and $i < i_c$
denser to rarer medium and $i > i_c$
rarer to denser medium and $i > i_c$
Solution
Condition of total internal reflection: The conditions to be satisfied for total internal reflection are as follows -
1) Light must travel from a denser to a rarer medium.
2) The angle of incidence $i$ must be greater than the critical angle $i_C$ the two media.