Strenght of Materials

Q.

When a body is subjected to a direct tensile stress (`sigma`) in one plane, then normal stress on an oblique section of the body inclined at an angle `theta` to the normal of the section is

A. `sigma cos theta`
B. `sigma cos^2 theta`
C. `sigma sin theta`
D. `sigma sin^2theta`

Answer : Option B

Explanation :