The tensile stress of about which limit are invisible to naked eye?
A. 5n/mm2
B. 6n/mm2
C. 3n/mm2
D. 10n/mm2
Answer:C
The tensile stress of about which limit are invisible to naked eye?
A. 5n/mm2 B. 6n/mm2 C. 3n/mm2 D. 10n/mm2