तीन प्रकार के लेजर क्या है� – McqOptions

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1.	तीन प्रकार के लेजर क्या हैं?
A.	गैस, धातु वाष्प, चट्टान
B.	सूचक, डायोड, सीडी
C.	डायोड, उल्टा, सूचक
D.	गैस, ठोस अवस्था, डायोड
Answer» E.

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