The substances which do not allow the light to pass through them are called

_____________ occurs when earth comes in between sun and moon.

Source of light ,an opaque object and the shadow will always lies in _________ .

______________ happens on a full moon day.

______________ is a simple device which is used to take photographs of stationary objects

___________ is the primary source of light.

_________ invented Telescope.

Human body is

An object which is capable of giving light is called

Objects that cast shadow are _________ objects.