MCQ
Material $A$ has critical angle $i_A$, and material $B$ has critical angle $i_B\left(i_B>i_A\right)$. Then which of the following is true
(i) Light can be totally internally reflected when it passes from $B$ to $A$
(ii) Light can be totally internally reflected when it passes from $A$ to $B$
(iii) Critical angle for total internal reflection is $i_B-i_A$
(iv) Critical angle between $A$ and $B$ is $\sin ^{-1}\left(\frac{\sin i_A}{\sin i_B}\right)$
(i) Light can be totally internally reflected when it passes from $B$ to $A$
(ii) Light can be totally internally reflected when it passes from $A$ to $B$
(iii) Critical angle for total internal reflection is $i_B-i_A$
(iv) Critical angle between $A$ and $B$ is $\sin ^{-1}\left(\frac{\sin i_A}{\sin i_B}\right)$
- A(a) (i) and (iii)
- B(b) (i) and (iv)
- C(c) (ii) and (iii)
- ✓(d) (ii) and (iv)