Question

 If the refractive index of a liquid is 4/3. The critical angle for the liquid is ____________?

Answer 1

According to Snell's law

$C= sin -1 (1/n)$

Where :

$C=$ Critical angle

$n=$ Refractive Index

$C= sin -1 (1/(4/3))$

$C=$ 48.59⁰