A) F
B) 2 F
C) \[\frac{F}{4}\]
D) 4F
Correct Answer: C
Solution :
\[\text{Breaking}\,\text{stress = }\frac{\text{breaking}\,\text{force}}{\text{area}}\text{ = constatant}\] \[\frac{F}{\left( \frac{\pi {{D}^{2}}}{4} \right)}=\frac{F}{\pi {{D}^{2}}}\] \[\frac{F}{\pi {{D}^{2}}}=4\frac{F}{\pi {{D}^{2}}}\] \[F=4F\] \[\ \therefore \] \[F=\frac{F}{4}\]
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