Shadow
Shadow: Overview
This Topic covers sub-topics such as Shadows, Penumbra, Umbra, Differences Between Image and Shadow, Conditions for Formation of Shadow, Formation of Shadows Using Opaque Object and, Activity on Shadow, Umbra and Penumbra
Important Questions on Shadow
List the necessary conditions for the formation of a shadow.


Differentiate between umbra, penumbra and shadow.

A(n)_____ is the part of the shadow where all of the light from the source is blocked by the shadowing object.


Is a shadow and image the same? Explain.

The shadow of an object is always _____.

Which is the darkest portion of the shadow?

STATEMENT: The shadow formed during the afternoon is the longest.
REASON: This is because the sun is near the horizon at this time.

Which type of propagation of light is the property of light which illustrate that we cannot see an object behind a wall?
(Choose from: Rectilinear/ Curvilinear)

Dark shadows are formed when light is blocked by these objects:

Study the diagram given alongside. Which of the following will be seen on the screen?
