Q3) how will you make a pinhole camera explain also draw the diagram to show the making of a pinhole camera?
Q4) with the help of an activity to show that light travels in a straight line?
Q5) what are the three necessary conditions to form a shadow?
Q6) what happens when light falls on a mirror?
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Q3)Take two boxes so that one can slide into another with no gap in between them. Cut open one side of each box. On the opposite face of the larger box,make a small hole in the middle. In the smaller box, cutout from the middle a square with a side of about 5 to 6 cm.
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