A uniform rod of mass m, length L, area of cross-section A and Young.s modulus Y hangs from the ceiling. Its elongation under its own weight will be (MCQ)

A uniform rod of mass m, length L, area of cross-section A and Young.s

1.	A uniform rod of mass m, length L, area of cross-section A and Young.s modulus Y hangs from the ceiling. Its elongation under its own weight will be (MCQ)
Answer» ZERO `(MGL)/(2AY)` `(mgL)/(AY)` `(2mgL)/(AY)` ANSWER :2