PDF chapter test TRY NOW
1. State true or false:
A circular shape is formed when top side of a cylinder is facing the Sun.
2. Give the steps to make a sliding pinhole camera.
Answer variants:
Make a small hole in the middle of the larger box and cut open the other side.
Now, the pin hole camera is ready.
Cover the smaller box with translucent screen or paper.
Take two cardboard boxes, one smaller in size.
Cut a square shaped piece of about \(5\) to \(6\ cm\) from the middle of the smaller box.
Slide the smaller box into the larger one keeping the translucent screen or paper inside.
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