An iron bar of length \[\ell \] cm and cross section A \[c{{m}^{2}}\]is pulled by a force of F dynes from ends so as to produce an elongation \[\Delta \ell \] cm. Which of the following statement is correct?

Elongation is directly proportional to Young's modulus

Elongation is inversely proportional to length

Elongation is directly proportional to cross section A

Elongation is inversely proportional to cross-section

An iron bar of length \[\ell \] cm and cross section A \[c{{m}^{2}}\]i

1.	An iron bar of length \[\ell \] cm and cross section A \[c{{m}^{2}}\]is pulled by a force of F dynes from ends so as to produce an elongation \[\Delta \ell \] cm. Which of the following statement is correct?
A.	Elongation is inversely proportional to length
B.	Elongation is directly proportional to cross section A
C.	Elongation is inversely proportional to cross-section
D.	Elongation is directly proportional to Young's modulus
Answer» D. Elongation is directly proportional to Young's modulus