5 a Light is incident normally on a grating of total ruled

Last updated: 6/21/2023

5 a Light is incident normally on a grating of total ruled width 5 x 10 m with 2500 lines in all Calculate the angular separation of two sodium lines in the first order spectrum Can they be seen distinctly 5 5 Marks b Two light sources are observed one after the other with two Nicole prisms mounted one behind the other as polarizer and analyzer The intensity of beams transmitted by the prisms are observed equal from two sources when the angle between the principal section of the nicols are 45 and 70 respectively Calculate the relative intensities of the two sources