COMEDK2017PhysicsWave Optics
When unpolarised light beam is incident from air onto glass (n=1.5) at the polarising angle
Options
- Areflected beam is polarised 100 percent
- Breflected and refracted beams are partially polarised
- Cthe reason for (a) is that almost all the light is reflected
- DAll of the above
Correct answer
A. reflected beam is polarised 100 percent
Step-by-step solution
According to phenomena of polarisation by reflection, when unpolarised light beam is incident from air onto glass (n=1.5) at the polarising angle (Brewster's angle), then reflected beam is polarised completely i.e. 100 % .