Question

why mercury vapour lamp gives pink light at start

Answer 1

A mercury-vapor lamp is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light. ... "Color corrected" mercury bulbs overcome this problem with a phosphor on the inside of the outer bulb that emits white light.

Answer 2

Answer:

ᴍᴇʀᴄᴜʀʏ ᴠᴀᴘᴏʀ ʟᴀᴍᴘ ɪs ᴀ ɢᴀs ᴇxᴄʜᴀɴɢᴇʀ........