Source of light ,an opaque object and the shadow will always lies in _________ .
a straight line
perpendicular
parallel
none of these
An object which is capable of giving light is called
Bio luminous bodies
Source of light
Non-luminous bodies
Luminous bodies
An object is visible when
Light falls on the object
Light falls on the observer
The light is completely stopped
The light rays falls in various direction
______________ is an important feature of light that it always travels in a straight line when it travels in the same medium
ray of light
rectilinear propagation if light
source of light
The substances which do not allow the light to pass through them are called
Non luminous bodies
Opaque substances
Transparent substances
Translucent substances.
Objects that cast shadow are _________ objects.
Transparent
Opaque
Luminous
Translucent
______________ is a simple device which is used to take photographs of stationary objects
binoculars
telescope
pinhole camera
microscope
Human body is
translucent
None of these
_________ invented Telescope.
C.V Raman
Galileo
Issac Newton
Einstein
Burning candle, oil lamp, tube light are _____________
Natural source of light
Artificial source of light
Examples of bioluminescence
None of these.
