Which of the following is not due to total internal reflection?
Working of optical fibre
Difference between apparent and real depth of pond
Mirage on hot summer days
Brilliance of diamond
Critical angle -
= Refractive index of rarer medium / Refractive index of denser medium
- wherein
When angle of incidence of a travelling from a dence medium to rarer medium is greater than critical angle, no refraction occurs.
optical fibre works on principles of Total Internal Reflection (T.I.R) mirage on hot summer days is effect of T.I.R Brillance of diamond is due to T.I.R. Difference between apparent and real depth of pond is due to refraction
Option 1)
Working of optical fibre
This is incorrect option
Option 2)
Difference between apparent and real depth of pond
This is correct option
Option 3)
Mirage on hot summer days
This is incorrect option
Option 4)
Brilliance of diamond
This is incorrect option