Which property of sodium is bing used in street lights ?

Which property of vision is used in cinematography ?

Which property of light is used to explain the characteristics of photoelectric effect?

Which colour light is produced by Sodium vapours in street light?

Which property of light can be proved using the set-up shown alongside?

Concave reflectors are used in street lights. ____

Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?

A convex mirror is used as street light reflector.