Answer:
TRUE
Step-by-step explanation:
the statement given is TRUE
0.2 % proof stress is used to define the yield stress of some statement is a right statement.
For, some metals proper yielding point is not defined for the materials so, to define the yield stress of that metals we uses prof stress of 0.2%.
Brittle material does not have yielding point so for that we use 0.2% proof stress example cast iron.