The surface of the mirror is
reflective surface
refracted surface
internal reflection
rough surface
An example of artificial light is
sun
stars
glow worms
bulb
Light cannot pass through
opaque substance
transparent substance
translucent substance
liquids
An example of natural light
Bulb
Torch light
Candle
Glow worm
Wood, coal are the
sources
heat
sources of heat
effects of heat
How many types of light sources are there?
1
2
3
4
To observe solar ellipse people uses
naked eye
power glasses
black glasses
none of these
The formation of image on mirror is due to
reflection
refraction
total internal reflection
diffraction
Heat transfer from one place to another is
conduction
convection
radiation
transmission
Which process helps the transmission of heat in solids ?
convention
isolation
