Q75
According to Griffith theory, which of the following are true for the fracture stress in a brittle material? P. Increases with increasing surface energy Q. Decreases with increasing elastic modulus R. Decreases with increasing length of pre-existing crack S. Decreases with increasing number of pre-existing cracks of same size
A.
P, R, S
B.
Q, R, S
AnswerC.
P, R
D.
P, S
Answer: Option B
Solution
Answer: Option B
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