The surface of the mirror is
reflective surface
refracted surface
internal reflection
rough surface
An example of insulator is
copper
aluminium
iron
wood
Which process helps the transmission of heat in solids ?
conduction
convention
radiation
isolation
Transmission of heat is possible only through
cement
glass
An example of artificial light is
sun
stars
glow worms
bulb
Which of the following helps to make the houses cool?
sand
clay
grass
The formation of image on mirror is due to
reflection
refraction
total internal reflection
diffraction
Heat transfer from one place to another is
convection
transmission
To observe solar ellipse people uses
naked eye
power glasses
black glasses
none of these
An example of natural light
Bulb
Torch light
Candle
Glow worm