Question

A uniform wire has length L and radius r. It is acted on by a force F as shown. The elongation is l. If F and r are both halved, the new elongation will be :

• A. $\frac{Δl}{2}$
• B. $Δl$
• C. $4Δl$
• D. $2Δl$

Answer 1

Answer: (D)

$2Δl$

Answer 2

The correct option is (D): $2Δl$