engineering recuitment UPPSC AE Mock Test 2024 Strength of Materials Principal Stress or Strain Principle Stress
If tensile stress at a point across two, mutually perpendicular planes is 120 N/mm2 and 60 N/mm2 respectively, then the normal stress acting on the plane is ______?
1
30 N/mm2
2
45 N/mm2
3
90 N/mm2
4
60 N/mm2