Question

Suppose you were stranded on a desert island with only a convex lens and a mirror. Describe how you could use each of these tools to signal for help. (2 points)

Answer 1

[AI-generated answer — Bot GPT 3.5]

To signal for help using the convex lens, you could focus sunlight onto a specific point, such as a dry piece of wood or some leaves, to create a small fire. The smoke and flames could be seen from a distance by potential rescuers.

To signal for help using the mirror, you could reflect sunlight in a specific direction by angling the mirror towards the sky and adjusting it until the reflection catches the attention of passing boats, planes, or search parties. By repeatedly flashing the mirror in a pattern, such as SOS (three short flashes, three long flashes, three short flashes), you can communicate distress and increase your chances of being noticed.