JEE Main20258 Apr 2025Evening ShiftPhysicsMechanical Properties of SolidsActual
A 3 m long wire of radius 3 mm shows an extension of 0.1 mm when loaded vertically by a mass of 50 kg in an experiment to determine Young's modulus. The value of Young's modulus of the wire as per this experiment is P 10¹¹ Nm ⁻² , where the value of P is: (Take . g =3 ~m / s ^2 )
Options
- A5
- B10
- C25
- D2.5
Correct answer
A. 5
Step-by-step solution
aligned & 50 ~g r ^2 = y & 50 3 (3 10⁻³ )^2 = P 10¹¹ 0.1 10⁻³ 3 & P = 50 3 3 3^2 10⁻⁶ 10¹¹ 0.1 10⁻³ & P =5 aligned