Two separate slab milling operations, 1 and 2, are performed

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Two separate slab milling operations, 1 and 2, are performed with identical milling cutters. The depth of cut in operation 2 is twice that in operation 1. The other cutting parameters are identical. The ratio of maximum uncut chip thicknesses in operations 1 and 2 is

1. 0.707
2. 0.767
3. 0.807
4. 0.709

Correct Option: A

Ratio of 1 and 2 is