NDA2018General AbilityGeneral ScienceActual
Which one of the following is the natural phenomenon based on which a simple periscope works?
Options
- AReflection of light
- BRefraction of light
- CDispersion of light
- DTotal internal reflection of light
Correct answer
A. Reflection of light
Step-by-step solution
Total internal reflection complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle.