Q39
A pearlitic steel is observed under an optical microscope which has a numerical aperture (N.A) of 1.5 and uses the radiation of 4500A. The minimum lamellar spacing (in A) which can be resolved using this microscope is
A.
500
B.
750
AnswerC.
1000
D.
1500
Answer: Option B
Solution
Answer: Option B
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