2. You have three opaque cardboard pieces with very small holes of different shapes as shown in the figures. If you obtain an image of the sun on the wall through these holes, will images formed by these holes be the same or different? Give reason.
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The same small circular image of the sun will be obtained in all the three cases because the small holes in the strips will act as a pinhole camera irrespective of their shapes. Also, as the light moves in the straight line, therefore the image of the sun will be same in all the cases.
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