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) C1=C2=C3 (C) C3>C1>C2 (D) C1 < C2 < C3

Tardigrade Admin · Accepted Answer

Using sin C =(1/n) we get C1 < C2 < C3 because light should travel from denser to rarer medium in this case

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

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

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

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

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

Using sin C $= \frac{1}{n}$
we get $C_{1} < C_{2} < C_{3}$ because light should travel from denser to rarer medium in this case

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​

C1​=C2​=C3​

C3​>C1​>C2​

C1​<C2​<C3​