The less dark part of the shadow around a dark shadow
is known as ________ and ________ is dark part of
the shadow that does not receive any light. The size
of umbra _________ and penumbra _________ as
we shift the screen away from the object.
A Penumbra, umbra decreases and increases
B Umbra, Penumbra, decreases and increases
C Umbra, Penumbra, increases and decreases
D Penumbra, umbra, remains same, decreases