Q. A wire of diameter $1mm$ breaks under a tension of $1000\ N$. Another wire, of same material as that of the first one, but of diameter $2\ mm$ breaks under a tension of

A) $500\ N$
B) $1000\ N$
C) $10000\ N$
D) $4000\ N$
Explanation

(d) Breaking force $\propto r^{2}$
If diameter becomes double then breaking force will become four times $i.e.1000 \times 4 = 4000\ N$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.