KVPY2020PhysicsMechanical Properties of Solids
Consider two wires of same material having their ratio of radii to be 2 : 1 . If these two wires are stretched by equal force, the ratio of stress produced in them is :
Options
- A1 4
- B1 2
- C3 4
- D1
Correct answer
A. 1 4
Step-by-step solution
Stress =   Force     Area   ∝ 1   Area   Stress ∝ 1 r 2 (Area = π r 2 ) ratio of stress = 1 2 2 = 1 4