Correct answer: C. ultra violet One has to use higher energy to produce radiation in the visible region. In (CO_2) laser two electrodes produce discharge which is used. Therefore ultraviolet rays are used to produce light in any lower energy region.

AIIMS 2007

Exam: AIIMS
Year: 2007
Subject: Physics
Chapter: Electromagnetic Waves

AIIMS 2007 · Physics · Electromagnetic Waves

(CO_2) laser uses

(\mathrm{CO}_2) laser uses

Options

Amicrowaves
Binfra red
Cultra violet
Dvisible light

Correct answer

C. ultra violet

Step-by-step solution

One has to use higher energy to produce radiation in the visible region. In (\mathrm{CO}_2) laser two electrodes produce discharge which is used. Therefore ultraviolet rays are used to produce light in any lower energy region.

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