Which among the following type of bulbs are used for ceiling lights and wall lights?

High pressure sodium
Metal halide
Mercury vapor
Low pressure sodium

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Option 3 : Mercury vapor

Mercury vapor bulbs are used for ceiling lights and wall lights.
But these are now outdated due to their less efficiency and are replaced by LED and CFL.

Different types of lighting sources with their applications:

Lightning source	Luminous efficiency (lumens/watt)	Application
Incandescent	8-20	Indoor lightning
Halogen	20-25	Flood and theatre lightning
Fluorescent	50-70	Indoor lightning
CFL	60-80	Indoor lightning
Mercury vapor	35-65	Ceiling and wall light
Metal halide	75-100	Overhead lighting in malls, factories, stores, etc.
High-pressure sodium	100-150	Street lightning where good light required
Low-pressure sodium	150-200	Street lighting used during foggy weather
LED	200	Multipurpose lighting used for indoor as well as outdoor applications

4 views Answered 2022-09-04 04:29

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