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प्रश्न
The transverse nature of light is shown in ______.
पर्याय
interference
diffraction
scattering
polarisation
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उत्तर
The transverse nature of light is shown in polarisation.
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संबंधित प्रश्न
Draw a neat labelled diagram showing the plane of vibration and plane of polarisation for polarised light.
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.
A beam of unpolarised light is incident on a glass-air interface. Show, using a suitable ray diagram, that light reflected from the interface is totally polarised, when μ = tan iB, where μ is the refractive index of glass with respect to air and iB is the Brewster's angle.
Two polaroids P1 and P2 are placed with their pass axes perpendicular to each other. An unpolarised light of intensity Io is incident on P1. A third polaroid P3 is kept in between P1 and P2 such that its pass axis makes an angle of 45° with that of P1. Determine the intensity of light transmitted through P1, P2 and P3
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 value of refractive index of a medium of polarising angle 60°?
Unpolarised light is incident on a polaroid. How would the intensity of transmitted light change when the polaroid is rotated?
Explain how an unpolarised light gets polarised when incident on the interface separating the two transparent media.
Greenlight is an incident at the polarising angle on a certain transparent medium. The angle of refraction is 30°.
Find
(i) polarising angle, and
(ii) refractive index of the medium.
What is polarisation?
What is partially polarised light?
State Brewster’s law.
What is the angle of polarisation and obtain the equation for an angle of polarisation?
Mention the types of optically active crystals with example.
A plane mirror produces a magnification of
Consider a light beam incident from air to a glass slab at Brewster’s angle as shown in figure. A polaroid is placed in the path of the emergent ray at point P and rotated about an axis passing through the centre and perpendicular to the plane of the polaroid.
To ensure almost 100 per cent transmissivity, photographic lenses are often coated with a thin layer of dielectric material. The refractive index of this material is intermediated between that of air and glass (which makes the optical element of the lens). A typically used dielectric film is MgF2 (n = 1.38). What should the thickness of the film be so that at the center of the visible spectrum (5500 Å) there is maximum transmission.
