A, B and C are three optical media of respective critical angles C1, C2, and C3 . Total internal reflection of light can occur from A to B and also from B to C but not from C to A. Then the correct relation between the critical angles is

Question

A, B and C are three optical media of respective critical angles C1, C2, and C3 . Total internal reflection of light can occur from A to B and also from B to C but not from C to A. Then the correct relation between the critical angles is (A) C1 < C2 < C3 (B) C3 > C1 > C2 (C) C1=C2=C3 (D) C1 > C2 > C3

Tardigrade Admin · Accepted Answer

Total internal reflection happens when light enters from a denser medium into rarer medium. Here, μA>μB>μC ⇒ (C/C1) > (C/C2) > (C/C3) or C1 < C2 < C3

Q. $A, B$ and $C$ are three optical media of respective critical angles $C_{1}, C_{2},$ and $C_{3} .$ Total internal reflection of light can occur from $A$ to $B$ and also from $B$ to $C$ but not from $C$ to $A$ . Then the correct relation between the critical angles is

$C_{1} < C_{2} < C_{3}$

$C_{3} > C_{1} > C_{2}$

$C_{1} = C_{2} = C_{3}$

$C_{1} > C_{2} > C_{3}$

Total internal reflection happens when light enters from a denser medium into rarer medium. Here,
$μ_{A} > μ_{B} > μ_{C}$
$\Rightarrow \frac{C}{C _{1}} > \frac{C}{C _{2}} > \frac{C}{C _{3}}$
or $C_{1} < C_{2} < C_{3}$

Q. A,B and C are three optical media of respective critical angles C1​,C2​, and C3​. Total internal reflection of light can occur from A to B and also from B to C but not from C to A. Then the correct relation between the critical angles is

C1​<C2​<C3​

C3​>C1​>C2​

C1​=C2​=C3​

C1​>C2​>C3​