Question

An iron bar of length ℓ cm and cross section A
cm² is pulled by a force of F dynes from ends so
as to produce an elongation Δ ℓ 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 A
(d) Elongation is directly proportional to
Young’s modulus

Answer 1

Answer:

An iron bar of length L cm and cross-section A cm2 is pulled by a force of F dyne from both

ends so as to produce an elo...

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