_________ is a narrow path along which the light travels.
Ray
Beam
Penumbra
Umbra
Burning candle, oil lamp, tube light are _____________
Natural source of light
Artificial source of light
Examples of bioluminescence
None of these.
______________ happens on a full moon day.
Lunar eclipse
Solar eclipse
Linear eclipse
None of these
Substance which allow the light to pass through them completely are called
translucent substance
transparent substances
opaque substances
non luminous substances
Bodies that emit light on their own are called
Non luminous bodies
Artificial bodies
Transparent substances
Luminous bodies
_________ invented Telescope.
C.V Raman
Galileo
Issac Newton
Einstein
When opaque objects are placed infront of sunlight or torch light ________ is formed behind the object.
Shadow
Light
Sound
Heat
___________ is the primary source of light.
oil lamp
sun
stars
moon
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
The substances which do not allow the light to pass through them are called
Opaque substances
Translucent substances.