CBSE BOARD XII, asked by crazy01, 9 months ago

He-Ne LASER is a ? (A) three level laser (B) four level laser (C) two level laser (D) none of these

Answers

Answered by brownie24

2

Answer:

it's a four level laser

Explanation:

thanks❤️❤️

Answered by hhaarriisshh

1

Answer:

I can't understand your question plz

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