One of the necessary condition for total internal reflection to take place is ( $\mathrm{i}=$ angle of…
One of the necessary condition for total internal reflection to take place is
( $\mathrm{i}=$ angle of incidence, $\mathrm{i}_{\mathrm{c}}=$ critical angle)
i $ < $ i $_{\mathrm{c}}$
$\mathrm{i}=\mathrm{i}_{\mathrm{e}}$
$\mathrm{i}=\frac{\pi^c}{2}$
i $>$ i $_{\mathrm{c}}$
Solution
Conditions necessary for total internal reflection to take place are
1) Light must travel from a denser medium to a rarer medium.
2) The angle of incidence must be greater than the critical angle for the pair of media.