MCQ
Two wires $A$ and $B$ of the same material have radii in the ratio $2 : 1$ and lengths in the ratio $4 : 1$. The ratio of the normal forces required to produce the same change in the lengths of these two wires is:
  • $1 : 1$
  • B
    $2 : 1$
  • C
    $1 : 2$
  • D
    $1 : 4$

Answer

Correct option: A.
$1 : 1$

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