Total Internal Reflection would happen only if __:
1. A ray travels from denser to rarer medium
2. A ray travels from rarer to denser medium
3. The angle of incidence in denser medium is greater than the critical angle
4. The angle of incidence in rarer medium is greater than the critical angle
Select the correct option from the codes given below:

Answer: [A] 1& 3

For a ray of light to suffer total internal reflection, the necessary conditions are as follows:

  1. The ray must travel from a denser to a rarer medium.
  2. The angle of incidence in denser medium should be greater than the critical angle.

This question is a part of GKToday's Integrated IAS General Studies Module