MCQ
In which case there is maximum extension in the wire, if same force is applied on each wire
- A$L = 500\, cm, d = 0.05\, mm$
- B$L = 200 \,cm, d = 0.02 \,mm$
- C$L = 300 \,cm, d = 0.03 \,mm$
- ✓$L = 400\, cm, d = 0.01\, mm$
✓
Answer
Correct option: D.
$L = 400\, cm, d = 0.01\, mm$
d
(d) $l \propto \frac{L}{{{r^2}}}$ $(Y$ and $F$ are constant$)$
(d) $l \propto \frac{L}{{{r^2}}}$ $(Y$ and $F$ are constant$)$
Maximum extension takes place in that wire for which the ratio of $\frac{L}{{{r^2}}}$ will be maximum.
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