Question

1 Draw different shapes of ellipses by placing two pins nearer and farther
using the same loop of thread. Notice when the ellipse becomes circular
2 On any sunny day take a straight stick that is one metre long. Find out a
clean and level place on the ground. Place this stick into the ground where
it casts a distinctive (sharp) shadow.
Step (I Mark the tip of the shadow with a stone or a twig or by any other
means. The first shadow mark is always towards the west. See
after 15 minutes and mark the tip of the shadow again. By then
it would have moved a few centimetres away. Now join the two
points and you have an approximate east-west line.
Step (2): Stand with the first mark to your left and the second mark to
your right you are now facing north. This fact is true everywhere
on the earth because the earth rotates in west to east direction.
An alternative method is more accurate but requires more time. Set up your
shadow stick and mark the first shadow in the morning. Use a piece of
string to draw a clean are through this mark around the stick. At mid-day,
the shadow will shrink or disappear. In the afternoon, it will lengthen again
and at the point where it touches the arc, make a second mark. Draw a line
through the two marks to get an accurate east-west line.​

Answer 1

Answer:

Good. Bhai mere Paas itna time nhi he ki ye pdu