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  4. In He-Ne laser the most favorable ratio of helium to neon for satisfactory laser action is :

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Q. In $He-Ne$ laser the most favorable ratio of helium to neon for satisfactory laser action is :

Rajasthan PMTRajasthan PMT 2006

Solution:

For satisfactory working of $He-Ne$ laser, the ratio of helium to neon is $ 7:1 $ .