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) $l \propto \frac{L}{r^2}$( $Y$ 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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