A force F is applied along a rod of transverse section area A the normal stress to a section PQ inclined theta to a transverse section is

​Q10. A force F is applied along a rod of transverse section area A. The normal stress to a section PQ inclined θ  to transverse section is
           


        ​(1)  F   sin   θ A                                               (2)  F   A   cosθ

        ​(3)  F   2 A sin   2 θ                                           (4)  F   A cos 2 θ
           

F/A cos theta
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First resolve force

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OPTION D IS CORRECT

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Fourth option is correct

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