Advertisements
Advertisements
प्रश्न
If the polarising angle for a given medium is 60°, then the refractive index of the medium is.................
पर्याय
`1/sqrt3`
`sqrt(3/2)`
1
`sqrt3`
Advertisements
उत्तर
√3
Refractive index,μ = tan iP
→ μ = tan60°
∴ μ = √3
APPEARS IN
संबंधित प्रश्न
What is a Polaroid?
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 ray of light passes from a vacuum to a medium of refractive index (μ). The angle of
incidence is found to be twice the angle of refraction. The angle of incidence is _______.
A) `cos^(-1)(mu/2)`
B) cos−1(μ)
C) `2 cos^(-1) (mu/2)`
D) `2 sin^(-1) (mu/2)`
What is the value of refractive index of a medium of polarising angle 60°?
State two uses of Polaroid.
State any two methods by which ordinary light can be polarised
Unpolarised light is incident on a polaroid. How would the intensity of transmitted light change when the polaroid is rotated?
Which of the following properties shows that light is a transverse wave?
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 the difference between polarised light and unpolarised light?
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.
Light transmitted by Nicol prism is ______.
What is a polariser?
What is a analyser?
What is plane polarised light?
State Brewster’s law.
What is the angle of polarisation and obtain the equation for an angle of polarisation?
Discuss about pile of plates.
What is double refraction?
How is polarisation of light obtained by scattering of light?
An unpolarised light of intensity 32 Wm-2 passes through three Polaroids such that the axes of the first and the last Polaroids are at 90°. What is the angle between the axes of the first and middle Polaroids so that the emerging light has an intensity of only 3 Wm-2?
Can reflection result in plane polarised light if the light is incident on the interface from the side with higher refractive index?
For the same objective, find the ratio of the least separation between two points to be distinguished by a microscope for light of 5000 Å and electrons accelerated through 100 V used as the illuminating substance.
