Which of the following is not the dimension of optical flat Type A as – McqOptions

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1.	Which of the following is not the dimension of optical flat Type A as per IS : 5440—1969 in mm ?
A.	25 x 10
B.	50 x 30
C.	30 x 10
D.	125 x 30
Answer» D. 125 x 30

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