Nature of Shadows

Shadows are

Formation of shadows is a consequence of _______ light.

Occurrence of eclipse and formation of shadows are due to ______.

What are shadows ?

'Shadow Cabinet' is the feature of Administrative system of :

A man stands at the end point of the shadow of a pole. He measure that length of shadow is 1/sqrt(3) times that of pole. What is the Sun's altitude ?

Introduction and Formation OF Shadow