JEE Main 2019 Physics question
Young's moduli of two wires A and B are in the ratio 7 : 4. Wire A is 2 m long and has radius R. Wire B is 1.5 m long and has radius 2 mm. If the two wires stretch by the same length for a given load, then the value of R is close to:
Answer: (B)
Solution
⇒ R ≈ 1.7 mm.