Question

A fixed volume of iron is drawn into a wire of length L.
The extension 'x' produced in the wire by a constant force
F' is proportional to __
(a) 1/L²
(b)1/L
(c)L²
(d)L​

Answer 1

Answer:

heya mate ❤

here is your answer ❤

option c is correct

) L2 Explanation: Y = {(F/A) / (ℓ/L)} = (FL / Aℓ) given : extension ℓ = x ℓ = (FL / AY)

x = (FL / AY) = [{FL2} / {(AL)Y}] .......(1)

as volume = V = Area × length i.e.

V = AL hence from (1)

, x = (FL2 / VY)

F is given to be constant, Y is constant

hope it's help ❤

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