In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25, if the cutting speed is halved, then tool life will become
A. Half
B. Two times
C. Eight times
D. Sixteen times
Answer: Option D
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Tailor formula is v*T^n= c.so according to this, v1T^0.25 = v2*T^ 0.25 solving we get T2 = 2^4*T1 = 16 T1