Advertisements
Advertisements
प्रश्न
A beam of light is incident at the polarizing angle of 35° on a certain glass plate. The refractive index of the glass plate is :
पर्याय
sin 35°
tan 35°
tan 55°
sin 55°
उत्तर
tan 35°
`i_p = 35^circ`
`mu = tan i_p`
`mu = tan 35^circ`
APPEARS IN
संबंधित प्रश्न
For a glass plate as a polariser with refractive index 1.633, calculate the angle of incidence at which light is polarised.
Three identical polaroid sheets P1, P2 and P3 are oriented so that the pass axis of P2 and P3 are inclined at angles of 60° and 90° respectively with the pass axis of P1. A monochromatic source S of unpolarised light of intensity I0 is kept in front of the polaroid sheet P1 as shown in the figure. Determine the intensities of light as observed by the observer at O, when polaroid P3 is rotated with respect to P2 at angles θ = 30° and 60°.
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.
Find an expression for intensity of transmitted light when a polaroid sheet is rotated between two crossed polaroids. In which position of the polaroid sheet will the transmitted intensity be maximum?
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.
What is the Brewster angle for air to glass transition? (Refractive index of glass = 1.5)
What does a polaroid consist of? How does it produce a linearly polarised light?
What is the difference between polarised light and unpolarised light?
What is partially polarised 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?
