Question

An adventurer has lost his way in jungle . He lost his watch . Suggest an instrument that can help him to estimate time accurately. Explain the property of light used in creating the instrument.

Answer 1

My first thought would be to use the light in the sky for help. stars and moon as night and sun as day, you can tell by when the sun rises and moves.

Answer 2

if it morning he can use compass..
If it is night he can use the star for find the way