The image obtained will be the same in all the three cases.
Question
You have 3 opaque strips with very small holes of different shapes as shown in figure. If you obtain an image of the sun on a wall through these holes, will the image formed by these holes be the same or different? 
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A sheet of plywood, a piece of muslin cloth and that of a transparent glass, all of the same size and shape were placed at A one by one in the arrangement shown in figure given below. Will the shadow be formed in each case? If yes, how will theshadow on the screen be different in each case? Give reasons for your answer. 
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