Define opaque, translucent, material, lustre, rough and meatals please answer if you know any
Answers
Opaque: The material which does not allow light to pass through it is called opaque, e.g. wood, iron, asbestos, etc.
Translucent: The material through which light can pass partially is called translucent, e.g. butter paper, thin curtain, etc.
Metals: Materials which are hard, have such luster and are good conductors of heat and electricity are called metals, e.g. iron, copper, gold, etc.
Non-metal: Materials which are brittle, which don’t have luster and are bad conductors of heat and electricity are called non-metals, e.g. coal, chalk, rubber, soil, etc
Luster: Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral. The word traces its origins back to the Latin lux, meaning "light", and generally implies radiance, gloss, or brilliance. A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky.
Answer:
opaque means the medium that does not pass any light through it.
translucent medium passes some light through it.
lustre means the light reflected from shiny substances. for eg. lustre of a metal ie. steel.