The yield strenght of a polycrystalline metal increases from 100 MPa to 145 MPa on decreasing the grain size from 64 μm to 25 μm. The yield strenght of this metal (in MPa) having a grain size of 36 μm is
A. 110
B. 125
C. 140
D. 165
Answer: Option B
This Question Belongs to Metallurgical Engineering >> Introduction To Metallurgy
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