Light and Shadow

What is the source of light in a traditional Indian diya (oil lamp)?

Why do shadows change their length during the day?

Which of the following materials will NOT allow light to pass through, creating a clear shadow?

If you stand between a light source and a wall, where will your shadow be formed?

Why does a shadow appear darker when the light source is smaller?

In cricket, why does a batsman's shadow sometimes appear long and sometimes short during a day match?

Which of the following statements about shadows is TRUE?

If a torch is placed very close to a small object, how will the shadow on the wall appear compared to when the torch is far away?