Take two long identical plane mirror strips. Draw lines making angles of 30o, 45o, 60o,75o and 90o on a unruled plane paper sheet fixed on a horizontal board. Place thereflecting surfaces of the mirror strips along the arms of 30o angle vertically, usingplasticine. Place a piece of coloured glass between the two mirrors and see how manyimages of it are formed in all. Repeat the experiment for other angles counting thenumber of images formed in each case. Tabulate number of images (n) against angle ofinclination between the mirrors (q). Draw a graph between q and n. Do you see anyrelationship between these two quantities?