Question

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PHYSICS
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PHYSICS
Question : 1 of 50
PHYSICS
For a laser beam 2 = 4400A and coherence time is 4 x 10-s. It's co
be :
(
CLOSE
(2) 1.2 Km
(4) 0.012 Km
(1) 12 Km
(3) 0.12 Km
Le
पांगतता समय 4x10​

Answer 1

Answer:

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