If the angle between the pass axis of a polariser and the analyser is `45^@`,write the ratio off the intensitties of original light and the transmitted ligth after pasing through the analyser.

If the angle between the planes of the polariser and analyser is 60^@ , by what factor does the intensity of the transmitted light change when passing through the analyser.

Light from an ordianry source(say a sodium lamp) is passed through a polaroid sheet P_1 .The transmitted light is then made to pass through a second polaroid sheet P_2 ,which can be rotated so that the angle (theta) betwen the two polaroid sheets varies from 0^@ to 90^@ .Show graphically the variation of he intensity of light transmitted by P_1 and P_2 as a function of the angle theta .Take the incident beam intensity as I_0 . Why does the light from a cleear blue portion of the sky,show a rise and fall on intesnity,when viewed through a polaroid ,which is rotated?

Two polaroids are set in corossed positions.A third polaroid is placed between the two making an angle theta with the pass axis of the first polaroid.Write the expession for the intensity of light trnasmitted from the second polaroid .In what orientations will the transmitted intenesity be minimum adn

Two polaroids are set in corossed positions.A third polaroid is placed between the two making an angle theta with the pass axis of the first polaroid.Write the expession for the intensity of light trnasmitted from the second polaroid .In what orientations will the transmitted intenesity be maximum.

A polariser and analyser are so oriented that intensity of light transmitted is maximum. What fraction of maximum light is transmitted when analyser is rotated through an angle of 60^@ ?

A beam of unpolarised ligth is made to fall,from air ,on its boundary with another transparent medium of refrective index mu .The reflected beam is viewed through a rotating analyser.Show on a graph,the variation of intensity of light trasmitted through the analyser with the angel between the pass axis of the analyser and the direction of the reflected beam.

In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plitted using the same scale for the two axes. A straight line passing through the origin and making an angle of 45^circ with x-axis meets the experimental curve at P. The coordinates of P will be.

Two polaroids P_1 and P_2 are placed with their pass axees perpendiculat to each otehr.An unpolarised ligth of intensity I_0 is incident on P_1 .A third polaroid P_3 is kept in between P_1 and P_2 such that its pass axis makes an angle of 45^@ with tha tof P_1 .Dtermine the intensity of light transmitted through P_1,P_2 and P_3 .

Unpolarised light of intensity 32 W m^(-2) passes trough three polarisers,such that transmission axis of last polariser is crossed with the first.If intensity of ermerging light is 3W m^(_2) ,what is the angle between the transmission axis of the first two,polarisers?At what angle will the inensity of transmitted light be maximum?

A paritally plane polarised bem of light is passed through a polaroid.Show graphically thervriation of the trnsmitted ligth intensity with angle of rotation of the polaroid.