Advertisements
Advertisements
प्रश्न
Explain how an unpolarised light gets polarised when incident on the interface separating the two transparent media.
Advertisements
उत्तर
When an unpolarized light falls on the interface separating two transparent media, mostly only those electric vectors get reflected at the boundary which is oscillating along a direction perpendicular to the plane of incidence, hence the reflected ray will be polarised containing only electric vectors. The complete polarisation takes place when the reflected wave and the refracted wave are perpendicular to each other.
APPEARS IN
संबंधित प्रश्न
Show, using a simple polaroid, that light waves are transverse in nature. Intensity of light coming out of a polaroid does not change irrespective of the orientation of the pass axis of the polaroid. Explain why.
Why does an unpolarised light incident on a polaroid get linearly polarised ?
Using the phenomenon of polarisation, show how the transverse nature of light can be demonstrated.
Two polaroids P1 and P2 are placed with their pass axes perpendicular to each other. An unpolarised light of intensity I0 is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle of 30° with that of P1. Determine the intensity of light transmitted through P1, P2 and P3
Show, via a suitable diagram, how unpolarised light can be polarised by reflection.
What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5)
When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.
A ray of light is incident on a transparent medium at a polarizing angle. What is the angle between the reflected ray and the refracted ray?
What is partially polarised light?
State Brewster’s law.
