An example of artificial light is
sun
stars
glow worms
bulb
Transfer of heat from one place to another without any medium is
conduction
convention
radiation
ionisation
To observe solar ellipse people uses
naked eye
power glasses
black glasses
none of these
An example of conductor
glass
wood
iron
stone
Light can easily pass through
opaque substance
transparent substance
translucent substance
Which process helps the transmission of heat in solids ?
isolation
In how many ways heat flow ?
1
2
3
4
Which of the following helps to make the houses cool?
sand
clay
grass
The surface of the mirror is
reflective surface
refracted surface
internal reflection
rough surface
An example of natural light
Bulb
Torch light
Candle
Glow worm
