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Match the scientist pairs listed in Group I with phenomena listed...

This question belongs to Metallurgical Engineering Physical Metallurgy
Physical Metallurgy
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Match the scientist pairs listed in Group I with phenomena listed in Group II.
Group I Group II
P. Hall-Patch 1. Dislocation reaction product
Q. Nabarro-Herring 2. Diffusional creep
R. Lomer-Cottrell 3. Dislocation source
S. Frank-Read Group 4. Grain boundary strengthening

Answer & Solution
Correct Answer: Option C
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